3. An elevator is moving downward at 1m/s. It is speeding up, with an acceleration of 3m/s². A block with a weight of 40N sits inside the elevator. a) What direction does the acceleration point? b) What is the mass of the block? c) Draw a force diagram of the block, and fill out the force table for the block below. (There are no horizontal forces so we don't need the x column.) d) Solve for any Force unknown forces on the block. 7 y +y ← 1m/s

3. An elevator is moving downward at 1m/s. It is speeding up, with an acceleration of 3m/s². A block with a weight of 40N sits inside the elevator. a) What direction does the acceleration point? b) What is the mass of the block? c) Draw a force diagram of the block, and fill out the force table for the block below. (There are no horizontal forces so we don't need the x column.) d) Solve for any Force unknown forces on the block. 7 y +y ← 1m/s

Name: 3. An elevator is moving downward at 1m/s. It is speeding up,with an
Uploaded: 2024-03-20T06:56:46.000Z
Channel: Bartleby
Description: 3. An elevator is moving downward at 1m/s. It is speeding up,with an acceleration of 3m/s². A block with a weight of 40N sitsinside the elevator.a) What direction does the acceleration point?b) What is the mass of the block?c) Draw a force diagram o

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 39P: A student’s backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an...

See similar textbooks

Similar questions

. The Kingda Ka roller coaster in New Jersey is the world’s tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57 m/s (128 mph) in just 3.5 s. (a) What is the acceleration experienced by passengers on this ride in m/s2? In g’s? (b) If a certain passenger has a mass of 65 kg, what is the force in newtons that acts on him during the launch phase of this ride? What is the force in pounds?
(a) A cat with a mass of 850 kg in moving to the right with a constant speed of 1.44 m/s. What is the total force on the cat ? (b) What is the total force on the cat if it is moving to the left?
A 5.00105 -kg rocket is accelerating straight up. Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion.
A 15-kg sled is pulled across a horizontal, snow-covered surface by a force appiled to a rope at 30 degrees with the horizontal. The coefficient of kinetic friction between the sled and the snow is 0.20. (a) If the force Is 33 N, what is the horizontal acceleration of the sled? (b) What must the force be in order to pull the sled at constant velocity?
A student’s backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? (c) What does the scale read if the elevator moves upward at constant velocity? (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read?
A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? (b) What is the net force on the car?
Mass and Weight The weight of an astronaut plus his space suit on the Moon is only 250 N. (a) How much does the suited astronaut weigh on Earth? (b) What is the mass on the Moon? On Earth?
(a) Give an example of different net external forces acting on the same system to produce different accelerations. (b) Give an example of the same net external force acting on systems of different masses, producing different accelerations. (c) What law accurately describes both effects? State it in words and as an equation.
Review. The gravitational force exerted on a baseball is Fgj. A pitcher throws the ball with velocity vi by uniformly accelerating it along a straight horizontal line for a time interval of t = t 0 = t. (a) Starting from rest, through what distance does the hall move before its release? (b) What force does the pitcher exert on the hall?
A weight lifter stands on a bathroom scale. He pumps a barbell up and down. What happens to the reading on the scale as he does so? What If? What if he is strong enough to actually throw the barbell upward? How does the reading on the scale vary now?
A child tosses a ball straight up. She says that the ball is moving away from her hand because the ball feels an upward force of the throw as well as the gravitational force. (a) Can the force of the throw exceed the gravitational force? How would the ball move if it did? (b) Can the force of the throw be equal in magnitude to the gravitational force? Explain. (c) What strength can accurately be attributed to the force of the throw? Explain. (d) Why does the ball move away from the childs hand?
2. Two masses were connected by a frictionless pulley and is placed in an inclined plane with kinetic friction coefficient of 0.2. If we let mass m2 to move at a constant speed downwards, give the following: a. Draw the FBD and write the summation of all forces acting on the masses. b. Solve for mass m2 if mass mı = 4kg. c. Find the tension force of the string.