A worker stands still on a roof sloped at an angle of 23° above the horizontal....

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A worker stands still on a roof sloped at an angle of 23° above the horizontal....

A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 470 N. Find the mass of the worker.

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A worker stands still on a roof sloped at an angle of 23° above the horizontal....

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