Calculating Minimal Force for Constant Speed: Friction & Mass Relationship

[liz777]

Homework Statement

A 20 kg block is on a surface where the coefficient of friction is 0.30. Find the minimal force needed to have the block more slowly at a constant speed.

The Attempt at a Solution

So I did coefficient of friction(mass)(gravity)=frictional force
20(0.3)(9.8)=58.86 N is the frictional force

Now is the minimal force needed to move the block like 58.87?

 

[horatio89]

Yes, for the block to be moving at a constant velocity (by Newton's 1st Law), friction = force applied on block. Hence your answer is absolutely correct.