The acceleration of gravity is 9.8 ms2 . find the, Ask an Expert

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A dock worker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 84 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant speed.

The acceleration of gravity is 9.8 m/s2 . Find the coefficient of static friction between crate and floor.

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