Question

A force of 3 kg. wt. is just sufficient to pull a block of 4 kg. wt. over a flat surface. What is the
of friction​

Answer 1

Answer:

a force of 3kg wt is just sufficient to pull a block of 4 kg over a horizontal surface . what is the angle of friction? minimum force reqired to move a body on a horizontal surface is Pmin=mgsin(theta). or, 3*9.8=4*9.8*sin(theta) or, theta=sin-1(3/4)=48.590