A worker stands still on a roof sloped at an angle of 36 above the horizontal. He

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A worker stands still on a roof sloped at an angle of 36° above the horizontal. He is prevented from slipping by a static frictional force of 390 N. Find the mass of the worker.

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Physics

ISBN: 978-0470879528

9th edition

Authors: John D. Cutnell, Kenneth W. Johnson

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