For work to be done on an object, two conditions must be satisfied: 1. A force must be applied to the object. 2. The object must be displaced in the direction of the force.
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When the displacement of the object is zero, the work done is also zero, regardless of the force applied. Mathematically, W = F . s, and if s = 0, then W = F . 0 = 0 joules.
When the force acting on an object is zero, the work done is also zero, regardless of the displacement. Mathematically, W = F . s, and if F = 0, then W = 0 . s = 0 joules.
Work is considered a scalar quantity because it has magnitude but no direction. While force and displacement are vector quantities, the product of the magnitude of the force and the displacement (in the direction of the force) results in a ...
When the force acts in the direction of the displacement, the work done is positive and is calculated as W = Fxs. If the force acts opposite to the direction of displacement, the work done is negative, and if the ...