Question

if force of 3 kg wt is just sufficient to pull a block of 4 kg over a horizontal surface, what is the angle 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.