Question

A horizontal force of 5N act on a block of mass 10 kg kept
on a rough horizontal surface. The coefficient of friction
between the block and the rough surface is 0.3. Find the
magnitude of frictional force acting between them, (g = 10
m/s2)

Answer 1

N=mg
N=10×10
=100
fr=0.3×100
=30 N

Answer 2

Answer:

5 N

Explanation: