Question

a block of mass 5 kg is lying on a rough horizontal surface the coefficient of Static and kinetic friction are 0.3 and 0.1 and G is equal to 10 metre per second square the frictional force on the block is​

Answer 1

• Frictional force is zero as there is no force acting on the block

• The maximum value of static friction here is,

static friction = Normal force × coefficient of friction

= mg × coefficient of static friction(because body is at rest)

= (5)(10) × 0.3

= 50 × 0.3

= 15 N