A block of mass 20 kg is pushed with a horizontal force of 90N. If the co-efficient of static & kinetic friction are 0.4 & 0.3, the frictional force acting on the block is (g=10 ms^(-2))

A block of mass 20 kg is pushed with a horizontal force of 90N. If the

1.	A block of mass 20 kg is pushed with a horizontal force of 90N. If the co-efficient of static & kinetic friction are 0.4 & 0.3, the frictional force acting on the block is (g=10 ms^(-2))
Answer» 90 N 80 N 60 N 30 N Answer :C