A boy drags a bag of rice along a smooth horizo... - JAMB Physics 2007 Question
A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at the angle of 60o to the floor. The work done after a distance of 3m is
A
3 J
B
4 J
C
5 J
D
6 J
correct option: a
Effective component of the force along the horizontal = F cos 60o
Work done by this force : 60
F cos 60 x X
= 2 x 0.5 x 3
= 3J
Work done by this force : 60
F cos 60 x X
= 2 x 0.5 x 3
= 3J
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