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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

When the merry-go-round of Quick Quiz 7.4 is rotating at a constant angular speed, Andrea’s tangential speed is (a) twice Chuck’s (b) the same as Chuck’s (c) half of Chuck’s (d) impossible to determine.

To determine
How the angular speed of Andrea is related to that of Chunk.

Explanation

Given Info: Andrea is riding on a horse at the outer rim of the circular platform. The distance between the center of the circular platform to Andrea is twice the distance between the center and Chunk.

Explanation:

Tangential velocity of a rotating particle is given by,

vt=ωr

  • ω is the angular speed
  • r is the radius

Andrea and Chunk have the same angular speed, so their tangential velocity will be directly proportional to their radius

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