What horizontally-applied force will accelerate a 400-kg crate at 1 m/s² across a factory floor against a friction force half its weight? A)600 N B)1600 N C)2000 N D)2400 N E)none of the above

Question

Quizplus · Accepted Answer

The force of friction is half the weight of the crate, which is 400 kg * 9.8 m/s^2 / 2 = 1960 N. The force required to accelerate the crate is the force of friction plus the force required to accelerate the crate, which is 1960 N + 400 kg * 1 m/s^2 = 2360 N.

What Horizontally-Applied Force Will Accelerate a 400-Kg Crate at 1