Question

Physics help with friction! the problem is "You push a 25kg wooden box across a wooden floor at a constant velocity of 1.0 m/s. If the coefficient of friction is .20, how much force do you exert on the box?"

Answer 1

how do you set up the question?

Answer 2

I know that m= 25kg

Answer 3

F=\[nuN\]

Answer 4

First, you draw the free body diagram.
And note that the question tells you:
there is no acceleration(constant velocity)
Then you apply Newton's second law to it.

Answer 5

ok
so newtons second law you would use f=ma?

Answer 6

yes. \(\Sigma F = m\Sigma a\)

Answer 7

oh ok a

Answer 8

so we know that m=25 kg and what is the a?