QUESTION 1 A toy airplane is moving along a circular track. If it takes the toy airplane 2 seconds to make a single revolution around the track, then what is the average angular velocity of the toy airplane as it moves around the track? Write your answer down in units of radians per second (rad/s), but only write down the number part of your answer.

QUESTION 1 A toy airplane is moving along a circular track. If it takes the toy airplane 2 seconds to make a single revolution around the track, then what is the average angular velocity of the toy airplane as it moves around the track? Write your answer down in units of radians per second (rad/s), but only write down the number part of your answer.

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 64P: While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the...

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While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the leg is 3.75kgm2 and its rotational kinetic energy is 175 J. (a) What is the angular velocity of the leg? (b) What is the velocity of tip of the punter’s shoe if it is 1.05 m from the hip joint?
Angular Speed and Angular Acceleration (a) Find the angular speed of Earths rotation about its axis. (b) How does this rotation affect the shape of Earth?
Ethan and Joseph are riding on a merry-go-round. Ethan rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Joseph, who rides on an inner horse. (i) When the merry-go-round is rotating at a constant angular speed, what is Ethans angular speed? (a) twice Josephs (b) the same as Josephs (c) half of Josephs (d) impossible to determine (ii) When the merry-go-round is rotating at a constant angular speed, describe Ethans tangential speed from the same list of choices.
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.
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A baseball bat is swung. Do all points on the bat have the same angular velocity? The same tangential speed?