A person is pulling a crate of mass 50 kg on the ground where the coefficient of kinetic friction is μk = 0.4. The person is pulling upward on the rope at an angle of 30° above the horizontal. 21130°(a) How hard does the person have to pull to keep the crate moving at constant velocity?(b) Find the normal force exerted on the crate by the ground.

Answered: Image /qna-images/answer/48d5c4ae-4d14-4805-844c-d1ac726aba5f.jpg

Answered: A person is pulling a crate of mass 50…

A person is pulling a crate of mass 50 kg on the ground where the coefficient of kinetic friction is μk = 0.4. The person is pulling upward on the rope at an angle of 30° above the horizontal.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 32PQ: If the vector components of the position of a particle moving in the xy plane as a function of time...

See similar textbooks

Related questions

Q: Negligible mass cord and pulley Frictionless pulley m2 -Motion Direction ml Frictionless surface…

Q: The table gives mass and speed data for the two objects in the figure. Find (a) the kinetic energy,…

Q: a. A particle is undergoing a uniform rectilinear motion and the displacement as a function of time…

Q: 2. The mass of the Earth is approximately 80 times the mass on the Moon. Let M be the mass of the…

Q: A 7.80-g bullet moving at 520 m/s penetrates a tree trunk to a depth of 6.30 cm. Answer parts a-b.

Q: 9.60t i+ 3. The position of a particular particle as a function of time is given by r = 8.58…

A: To determine the particle's velocity and acceleration as a function of time, we need to…

Q: Angular Momentum of Point Particle: The relation Z=1 only holds for a symmetric object rotating…

Q: 12. A small ball of mass m₁ = 0.260 kg is moving at a speed of 3.55 m/s. It strikes a stationary…

A: The initial velocity of the small ball is 3.55 m/s.The mass of the small ball is 0.26 kg.The mass of…

Q: that is the absolute magnitude of the unit vector directe-

Q: 22. In an interference experiment, red light with a wavelength 6.0x10 m of passes through a double…

A: Wavelength is Distance between slits and screen is Distance between central bisector and dark band…

Q: A satellite is in a circular orbit around the Earth at an altitude of 3.08 106 m. Answer parts a-c.

Q: Explain the behaviour of the iron sheet in atomic terms, with reference to the arrangement of the…

A: The behavior of an iron sheet can be explained in atomic terms by considering the arrangement of…

Q: According to figure, Find the current in the 3.00-ohm resistor.?

Q: You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own…

Q: A battery connected to a capasitor in order to setup a potential difference across the plates. While…

A: When a dielectric is inserted between the plates of a capacitor, the presence of the dielectric…

Q: 10. An object (A) of mass mA = 17.5 kg is moving due west with a speed VA = 8.10 m/s, while object…

Q: A particle is undergoing kinematic motion and the displacement as a function of time is given by…

Q: How does the Boltzmann distribution and statistics explain the behavior of an ideal gas in terms of…

A: Boltzmann's statistics, or Boltzmann distribution, is a fundamental principle used in statistical…

Q: same

A: To determine the percentage of kinetic energy lost during the collision, we need to calculate the…

Q: In an experiment designed to measure the magnitude of a uniform magnetic field, electrons are…

Q: Two point charges lie on the x axis. A charge of +2.60 pC is at the origin, and a charge of 4.80 pC…

Q: 1. Hydrogen has four emission wavelengths in the visible portion of the electromagnetic spectrum.…

A: In visible portion of electromagnetic spectrum, hydrogen has four emission wavelengths.

Q: 24. Determine the acceleration of the system and the tension in the string for the following pulley…

Q: Explain why soap bubbles has swirls of colors. Why are there different colors?

A: The light waves reflected from opposite sides of the thin bubble wall interfere with each other as…

Q: A constant force F = (8i + 6j ) N acts on a particle as it moves along a straight line path. If the…

Q: south

A: To determine the speeds of the blocks after their second collision, we can apply the principles of…

Q: Three people talk simultaneously. If the intensity level is 84 dB when each speaks alone, what is…

A: The number of the people is 3.The sound level of the each person is 84 dB.

Q: A common practice for a person with a high fever is to take a bath in cool water. Assuming an 80 kg…

Q: Suppose that a 1221 Hz tuning fork moves at 13.8 m/s through air and water. (a) Find the observed…

A: The frequency of tuning fork is The speed of the tuning fork is Speed of observer is Speed of sound…

Q: What factors determine the strength of the magnetic field produced by a bar magnet?

A: A bar magnet is a rectangular piece of material that generates a magnetic field, an invisible field…

Q: A balanced quadrilateral has mass 10 kg and side length 1 m. One of its bottoms is kept in contact…

A: To invert the balanced quadrilateral, we need to calculate the minimum amount of energy required to…

Q: 2. An object of mass 200 g (0.2 kg) is thrown vertically upwards with a velocity of 8 m/s from a…

Q: Problem 3 A power plant produces 1500 MWe with an efficiency of 35 %. Assuming this is a coal-fired…

A: A power plant produces with an efficiency of .Assuming this is a coal-fired plant,a) To calculate…

Q: Going fast, and turning left. How does the velocity of the car/plane/motorcycle impact the…

A: The banking of roads, also known as road camber or superelevation, refers to the intentional tilting…

Q: A laser emission from a certain laser has an output power of 10 milli watts. If the wavelength of…

A: Given data:The power output from the laser is The wavelength of the emission is The planck's…

Q: ball pitched on a windy day is moving at 20 m/s i and feels a gravitational force of -1.4 N k and a…

Q: Kevin, Ian and Evan have become championship golfers (at least on their phones....). Ian, just…

Q: 16. Two charged spheres 10 cm apart attract each other with a force of 3.0 x 106 N. What forc…

Q: Two resistors of 12\Omega and 18\Omega are connected in parallel. This combination is connected in…

Q: As an airplane is taking off at an airport its position is closely monitored by radar. The following…

Q: Ground state He + absorbs a photon to promote electron to excited state. This electron then relaxes…

Q: OK, one more time. This time the magnet has mass 3.72 kg and the force pulling it to the right is…

Q: Find ty, the magnitude of the final velocity of the two-block system. Express your answer…

Q: Write the Hamilton expression for a polyatomic molecule using the Born-Oppeinheimer approximation.

A: The Hamiltonian expression for a polyatomic molecule within the Born-Oppenheimer approximation can…

Q: intake vaive intake compression Tuel Injector power the temperature of the gas; exnaust vaive…

A: In a petrol engine, the operation of the cylinder can be analyzed using the first law of…

Q: A 4F B.F C.F/4

Q: 11. An explosion breaks a 27.0-kg object initially at rest into three parts. Part (1) has a mass m₁…

A: Initial mass M = 27.0 kg m1 = 5.20 kg , v1 = 59.0 m/s towards east.m2 = 5.20 kg , v2 = 78.0 m/s…

Q: A 50-kg wheel of diameter 2.0 m is free to rotate about its center. A 20 N force is applied on the…

A: The mass of the wheel is 50 kg.The radius of the wheel is 2 m.The applied force is 20 N.The angle…

Q: In a gas turbine, the gases flow at a rate of 5 Kg/s. The gases enter the turbine at a pressure of 7…

Q: Given a right triangle with one angle measuring 45 degrees and the hypotenuse measuring 12 units,…

A: A right angled triangle with one angle is 45° And the hypotenuse of that traingle is 12 units

Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

A person is pulling a crate of mass 50 kg on the ground where the coefficient of kinetic
friction is μk = 0.4. The person is pulling upward on the rope at an angle of 30° above the horizontal.

21
130°
(a) How hard does the person have to pull to keep the crate moving at constant velocity?
(b) Find the normal force exerted on the crate by the ground.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: GIVEN

VIEW

Step 2: CALCULATION

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A makeshift sign hangs by a wire that is extended over an ideal pulley and is wrapped around a large potted plant on the roof as shown in Figure P6.10. When first set up by the shopkeeper on a sunny and dry day, the sign and the pot are in equilibrium. Is it possible that the sign falls to the ground during a rainstorm while still remaining connected to the pot? What would have to be true for that to be possible? FIGURE P6.10 Problems 10 and 11.
A 75.0-g arrow, fired at a speed of 110 m/s to the left, impacts a tree, which it penetrates to a depth of 12.5 cm before coming to a stop. Assuming the force of friction exerted by the tree is constant, what are the magnitude and direction of the friction force acting on the arrow?
A block of ice (m = 15.0 kg) with an attached rope is at rest on a frictionless surface. You pull the block with a horizontal force of 95.0 N for 1.54 s. a. Determine the magnitude of each force acting on the block of ice while you are pulling. b. With what speed is the ice moving after you are finished pulling? Repeat Problem 71, but this time you pull on the block at an angle of 20.0.
The x and y coordinates of a 4.00-kg particle moving in the xy plane under the influence of a net force F are given by x = t4 6t and y = 4t2 + 1, with x and y in meters and t in seconds. What is the magnitude of the force F at t = 4.00 s?
If the vector components of the position of a particle moving in the xy plane as a function of time are x(t)=(2.5ms2)t2i and y(t)=(5.0ms3)t3j, when is the angle between the net force on the particle and the x axis equal to 45?
A mule is harnessed to a sled having a mass of 201 kg, including supplies. The mule must exert a force exceeding 1270 N at an angle of 30.3° (above the horizontal) in order to get the sled moving. Treat the sled as a point as a particle. a) Calculate the normal force (in N) on the sled when the magnitude of the applied force is 1270 N. (Enter the magnitude.) N (b) Find the coefficient of static friction between the sled and the ground beneath it. (c) Find the static friction force (in N) when the mule is exerting a force of 6.35 ✕ 102 N on the sled at the same angle. (Enter the magnitude.) N
A 12 N horizontal force pushes a block weighing 5.0 N against a vertical wall . The coefficient of static friction between the wall and the block is 0.60, and the coefficient of kinetic friction is 0.40. Assume that the block is not moving initially. (a) Will the block move? (b) In unit-vector notation, what is the force on the block from the wall?
A cart with mass 15.0 kg moves in a straight line on a frictionless horizontal surface. Take this surface to be along the x-axis. The cart has an initial speed of 8.00 m/s and it was pushed 5.00 m in the same direction as the initial velocity by an external force with a magnitude of 20.0 N. What is the cart's final speed?
A block with a mass of 7.15 kg is on a horizontal surface that has friction. A string is pulling horizontally on the block with a force of 30.6 N at an angle of 15.2° above horizontal. The block is movingalong the surface at a constant speed of 4.39 m/s. What is the magnitude of the kinetic frictional force that is acting on the block?
On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20 kg basket of goodies beside her. A wolf came along, spotted the basket, and began to pull on the handle with a force of 6.40 N at an angle of 25 degree with respect to vertical. Red was not going to let go easily, so she pulled on the handle with a force of 12.2 N. If the net force on the basket is straight up, at what angle was Red Riding Hood pulling from the vertical?
On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20-kg basket of goodies beside her. A wolf came along, spotted the basket, and began to pull on the handle with a force of 6.40 N at an angle of 25° with respect to vertical. Red was not going to let go easily, so she pulled on the handle with a force of 13.5 N. If the net force on the basket is straight up, at what angle was Red Riding Hood pulling from the vertical? The whole question did not paste in on my last attempt.
Determine the magnitude of the y-component of the reaction force at pin A (in kN). The beam AB is a standard 0.5 m I-beam with a mass of 95 kg per meter of length. 14 l A 0.25 m 0.5 m 0.12 m 5 m 25° 1.5 m 10 kN B