CUET Preparation Today
A truck moves at a steady speed on a horizontal road. What is the work done by the road on the truck ? |
Not defined as the truck is non-living object Negative work is done on the truck No work is done on the truck Positive work is done on the truck |
No work is done on the truck |
Work done is given by : \(W = \vec{F}.\vec{S} = FS \cos {\theta}\) Force applied by the road is the Normal Reaction Force, N which acts upwards. The displacement S is in forward direction. \(W = N.S \cos {90^o} = zero\) |
