Question

A block of mass Ikg is placed on the door. The coefficient of static
friction is 0.2.If a force of IN is applied on the block, the force of friction
(a)
(b) 2N (C) IN (d) Varies with the area of contact of the block​

Answer 1

force of friction = u r

r= mg ....

so ...f = umg

f= 0.2 ×1×10

f= 2N