A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static...

A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.582 and 0.428, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the dock at a constant speed?

Expert Solution

Mass of the crate m = 59.3 kg

The coefficients of static friction ? = 0.582

The coefficients of kinetic friction ? ' = 0.428

(a) Horizontal pushing force is required to just start the crate moving = Static frictional force

= ?mg

= 338.57 N
(b) Horizontal pushing force is required to slide the crate across the dock at a constant speed

= Kinetic frictional force

= ? ' mg

= 248.98 N

genius_generous answered 1 month ago

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