A body of mass 2 kg moves in a (counterclockwise) circular path of radius 10 meters, making one revolution every 7 seconds. You may assume the circle is in the xy-plane, and so you may ignore the third component. A. Compute the centripetal force acting on the body. B. Compute the magnitude of that force. Note: Use exact forms or at least 4 significant digits in your answers.

A body of mass 2 kg moves in a (counterclockwise) circular path of radius 10 meters, making one revolution every 7 seconds. You may assume the circle is in the xy-plane, and so you may ignore the third component. A. Compute the centripetal force acting on the body. B. Compute the magnitude of that force. Note: Use exact forms or at least 4 significant digits in your answers.

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter13: Gravitation

Section: Chapter Questions

Problem 73AP: (a) Using the data in the previous problem for the asteroid Vesta which has a diameter of 520 km and...

See similar textbooks

Similar questions

ha body that will guid. What Have I Learned So Far? 1. The circular path of the moon, which has a radius of approximately 3.84 x 105 km, as it revolves around Earth makes the moon complete one revolution in 27.32 days. What is the speed of the moon and its radial acceleration? e circular rack. Solution: is 2. Bodies that are on the surface of Earth are undergoing radial acceleration due to Earth's rotation on its axis. Our planet completes one rotation in 24 hrs and has a radius of about 6371 km. a. What is the radial acceleration of a body found at Earth's equator in m/s2. b. If a certain body will be placed at 25° latitude, compute its radial acceleration. in Action ter edge force. Solution: move
If the magnitude of the resultant force is to be 500 N, directed along the positive y axis, determine the magnitude of force F and its direction θ . a. Write some differences between centripetal and centrifugal force with diagrams? b. A 500 gm of round shaped ball attached at the end of a cord, is rotated in a horizontal circle with an angular speed of 10 rad/s. If cord’s length is 60 cm, what is the centripetal force? c. If the final speed of the ball = 3 ×the initial speed, then what is the centripetal force?
11.9. We will learn in Chapter 6 that the force F necessary to keep an object moving in a circle is directly proportional to the square of the object's speed, v². a. As v increases what happens to v² (does it increase or decrease)? What then happens to F (does it increase or decrease)? b. Write an equation that relates the two variables F, v² using an unknown constant k. c. A car moving around a circular track at a speed of 20 mile/hour requires the frictional force between its tires and the ground to be 500 pounds. What is the value and units of the proportionality constant. What is the equation that relates the two variables F, v² using an unknown constant k.
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes time T on average to complete one nearly circular revolution around the unnamed planet. If the diameter of the moon's orbit is D, calculate the moon's radial (or centripetal) acceleration a.. ac =
An object moves in a horizontal circle at constant speed v (in units of m/s). It takes the object T seconds to complete one revolution. a. Derive an expression that gives the radial acceleration of the ball in terms of v and T, but not r. b. If the speed doubles, by what factor must the period T change if arad is to remain unchanged? c. If the radius doubles, by what factor must the period change to keep arad the same?
A boy swings a ball on a string around his head in a circle. Starting out, the radius is ro and the speed is vo. But then he pulls the string in until the radius is rf. These are the numbers: ro = 10 meters rf = 6 meters vo = 6 m/s Suppose that the speed is constant as he pulls the string in. Calculate the final force divided by the initial force (Ff/Fo).
While at the county fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find the motion somewhat unpleasant. To take your mind off your stomach, you wonder about the motion of the ride. You estimate the radius of the big wheel to be 15 m, and you use your watch to find that each loop around takes 25 s.a. What are your speed and magnitude of your acceleration?b. What is the ratio of your apparent weight to your true weight at the top of the ride?c. What is the ratio of your apparent weight to your true weight at the bottom?
A ball tied to the end of a cable is spun ina circle with a radius 0.32 m making 3 revolutions every 7.2 seconds. What is the magnitude of the acceleration, a (in m/s ), of the ball? Give your answer accurate to one decimal place and enter only the number (and not the unit) below: a = Type your answer.
A race car moves on a circular track at a uniform speed of 30.0 m/s in a counterclockwise direction. The radius of the track is 75.0 m. What is the direction of the car’s acceleration? b. What is the magnitude of the car’s acceleration?
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 20.0 days on average to complete one nearly circular revolution around the unnamed planet. If the distance from the center of the moon to the surface of the planet is 2.420 × 10° km and the planet has a radius of 4.100 × 10³ km, calculate the moon's radial acceleration a. a = m/s? & TOOLS x10
An object moves in a horizontal circle at constant speed v (in units of m/s). It takes the object T seconds to complete one revolution. a. Derive an expression that gives the radial acceleration of the ball in terms of v and T, but not r. b. If the speed doubles, by what factor must the period T change if arad is to remain unchanged?
The 32-inch ceiling fan spins at 60 RPM and accelerates steadily to 130 RPM in nine seconds. A. Determine the speed (ft / s with two decimal places) for the point 15 inches from the center of the fan 16 seconds after the beginning of the above movement. B. Specify the time (s with two decimal places) for the fan to rotate 125 revolutions. Draw a Free Body Diagram if necessary in part A or part B or both. Please urgent ??? thank you