JAMB - Physics (2012 - No. 2)
A load is pulled at a uniform speed along a horizontal floor by a rope at 45o to floor. If the force in the rope is 1500N, what is the frictional force on the load ?
1524N
1350N
1260N
1061N
Објашњење
F = mg cos 45o = 1500 x 0.708