DETAILS Viewing Saved Work Revert to Last Response 1. Which object reaches the bottom of the ramp first? O The solid cylinder They reach the bottom at the same time The block Consider an inclined ramp with a vertical height of 2.50m. Two objects are initially at rest at the top of the ramp: a 1kg block and a 1kg solid cylinder with radius 0.29m. Both are released at the same time, with the block sliding without friction and the solid cylinder rolling. Submit Answer 2. Determine the translational velocity of the solid cylinder when it reaches the bottom of the ramp. m S 3. How much angular momentum does the solid cylinder have at the bottom of the ramp? kg. m² S DETAILS MY NOTES Viewing Saved Work Revert to Last Response Sty ASK YOUR TEACHER MY NOTES ASK YOUR TEACHER

DETAILS Viewing Saved Work Revert to Last Response 1. Which object reaches the bottom of the ramp first? O The solid cylinder They reach the bottom at the same time The block Consider an inclined ramp with a vertical height of 2.50m. Two objects are initially at rest at the top of the ramp: a 1kg block and a 1kg solid cylinder with radius 0.29m. Both are released at the same time, with the block sliding without friction and the solid cylinder rolling. Submit Answer 2. Determine the translational velocity of the solid cylinder when it reaches the bottom of the ramp. m S 3. How much angular momentum does the solid cylinder have at the bottom of the ramp? kg. m² S DETAILS MY NOTES Viewing Saved Work Revert to Last Response Sty ASK YOUR TEACHER MY NOTES ASK YOUR TEACHER

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 5CQ: A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with...

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A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with the top end of the cord fixed, as represented in Figure CQ7.5. The bob moves without friction, swinging equally high on both sides. It moves from its turning point A through point B and reaches its maximum speed at point C. (a) At what point does the bob have non-zero radial acceleration and zero tangential acceleration? What is the direction of its total acceleration at this point? (b) At what point does the bob have nonzero tangential acceleration and zero radial acceleration? What is the direction of its total acceleration at this point? (c) At what point does the bob have both nonzero tangential and radial acceleration? What is the direction of its total acceleration at this point? Figure CQ7.5
A particle of mass m moves in the XY-plane, and its position vector is given by = a cos wtî + b sin wtĵ where a, b, and w are positive constants, and a > b. Show that a. The particle moves in an ellipse. b. The force acting on the particle is always directed toward the origin. c. The total work done by the force in moving the particle once around the ellipse is zero d. The force is conservative.
Disk B is at rest when it is brought into contact with disk A which is rotating freely at 450 rpm clockwise. After 6 s of slippage, during which each disk has a constant angular acceleration, disk A reaches a final angular velocity of 140 rpm clockwise. Determine the angu- lar acceleration of each disk during the period of slippage. A 3 in. B 5 in.
At the local discotheque the speed dial controlling the 5 kg solid and uniform disco ball of radius 20 cm malfunctioned causing the disco ball to accelerate from 8 revolutions per minute up to 62 revolutions per minute. Calculate the change in kinetic energy. Answer in J.
Ball within a shell. In Fig. a ball of mass m and radius R is placed inside a spheri- cal shell of the same mass m and inner radius 2R. The combination is at rest on a floor. The ball is released, rolls back and forth inside the shell, and finally comes to rest at the bot- R 2R tom. What is the horizontal displacement d of the shell during this process?
CP Riding a Loop-the-Loop. A car in an amusement park ride rolls without friction around a track The car starts from rest at point A at a height h above the bottom of the loop. Treat the car as a particle. (a) What is the minimum value of h (in terms of R) such that the car moves around the loop without falling off at the top (point B)? B CR 3/2R 3R 2R 5/2R O R
Please answer parts D and E! Thank you! One day, you launch a 2.5 kg projectile from ground level at an initial angle of 25° with a speed of 30 m s-1. A-What is the initial vertical and horizontal velocity components of the projectile, and the time it takes to reach the top of its trajectory? B-What is the total time the projectile is in the air, its maximum height and the horizontal distance it travels? C- Calculate the initial kinetic energy of the projectile. Calculate kinetic energy of the projectile at the top of its trajectory. Calculate kinetic energy of the projectile right before it hits the ground D- Calculate how much work is done by gravity on the projectile while it is still rising. Calculate how much work is done by gravity on the projectile while it is falling. E- What is the change in momentum of the projectile from when it is launched until when it hits the ground? Using the flight time found in question B, what is the average force of the projectile during the…
e When astronauts returnfrom prolonged space flights, they often suffer from bone loss,resulting in brittle bones that may take weeks for their bodies torebuild. One solution may be to expose astronauts to periods ofsubstantial “g forces” in a centrifuge carried aboard their spaceship. To test this approach, NASA conducted a study in which fourpeople spent 22 hours each in a compartment attached to the endof a 28-foot arm that rotated with an angular speed of 10.0 rpm.(a) What centripetal acceleration, in terms of g, did these volunteers experience? (b) What was their linear speed?
A ping pong ball was dropped inside the bowl and was at rest initially then a person push the ping pong ball causing the ball to roll and also allowing the ball to not slip while rolling. By knowing that the ping pong ball is solid and has a radius of “r” and letting the “R” be the bowl radius, find the speed of the ping pong ball as it passes through the lowest point of the bowl as shown in figure where it starts from θ measured from the dotted vertical line through the center of the bowl without the ping pong ball slipping inside of the bowl.
An automobile engine slows down from 3200 rpm to 1200 rpm in 2.0 s . A.Calculate its angular acceleration, assumed constant. B.Calculate the total number of revolutions the engine makes in this time.
An automobile with 0.300 m radius tires travels 70,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear? x revolutions A truck with O.600 m radius tires travels at 29.0 m/s. At how many radians per second are the tires rotating? What is this in rpm? гad/s rpm
Now Chandra and Darcel decide to try a problem. Suppose that the height of the incline is h = 16.0 m. Find the speed at the bottom for each of the following objects. solid sphere m/s spherical shell m/s hoop cylinder m/s m/s In a race, which object would win?