Question

in figure a carriage P is puled up from A to B . The relevant coefficient of friction is 0.40 . The work done will be

Answer 1

W=Fs

 = mu.m.g.s

=0.4×50×10×10×cos 36. 86.   Theta is found by calculation  

 

 

Ans will be 1600 Joules

Ans will be 1600 J