kg mass is being dragged across a smooth surface by a vehicle A, which is
climbing a slope of 5o. The cable passes over a small pulley
B.Determine the work done by the vehicle to increase the cable angle from
20o to 30o, with the vehicle exerting a constant force
of 200N on the cable.
1) 1000.3 J.
2) 1847.6 J.
3) 2345.6 J.
4) 5432.1 J.
of rope between the pulley and the mass is,
At q= 20o (BC1) = 10/sin(20)
At q= 30o (BC2) = 10/sin(30)
The work done by the vehicle is given by,
UT = F[(BC1) - (BC2)] ;
= 200[(10/sin 20 ) - (10/sin 30)] ;
= 1847.6 J.