The 11.6-lb steel cylinder A and the 17.7-lb wooden cart B are at rest in the position shown when the cylinder is given a slight nudge,causing it to roll without sliding along the top surface of the cart. Neglecting friction between the cart and the ground, determine thevelocity of the cart as the cylinder passes through the lowest point of the surface at C.6 in.CBThe velocity of the cart as the cylinder passes through the lowest point of the surface at C is vB=|ft/s←.

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Answered: The 11.6-lb steel cylinder A and the…

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 84P: You have a grindstone (a disk) that is 90.0 kg, has a 0.340-m radius, and is turning at 90.0 rpm,...

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You have a grindstone (a disk) that is 90.0 kg, has a 0.340-m radius, and is turning at 90.0 rpm, and you press a steel axe against it with a radial force of 20.0 N. (a) Assuming the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstine. (b) How many turns will the stone make before coming to rest?
Olympic ice skaters are able to spin at about 5 rev/s. (a) What is their angular velocity in radians per second? (b) What is the centripetal acceleration of the skater's nose if it is 0.120 m from the axis of rotation? (c) An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since—at about 9 rev/s. What was the centripetal acceleration of the tip of his nose, assuming it is at 0.120 m radius? (d) Comment on the magnitudes of the accelerations found. It is reputed that Button ruptured small blood vessels during his spins.
You have a grindstone (a disk) that is 90.0 kg, has a 0.340-m radius,and is turning at 90.0 rpm, and you press a steel axe against it with aradial force of 20.0 N. (a) Assuming the kinetic coefficient of frictionbetween steel and stone is 0.20, calculate the angular acceleration ofthe grindstone. (b) How many turns will the stone make before comingto rest?
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