JEE Main Physics question
The work done in dragging a stone of mass 100 kg up an inclined plane 1 in 100, through a distance of 10 m is (g = 9.8 ms⁻²)
Answer: (D)
Solution
sinθ = 1/100. Component of weight along the incline = mg sinθ = 100×9.8×0.01 = 9.8 N. W = 9.8×10 = 98 J.