The work done by a force is considered zero if either the displacement of the object is zero or the force acts perpendicular to the direction of displacement. In mathematical terms, W = F⋅ s ⋅ cos(θ), where θ is ...
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Work is defined as the product of the force and the displacement of an object in the direction of the force. Mathematically, it is expressed as W = F ⋅s, where W is the work done, F is the magnitude ...
No, work is not done because the object must be displaced for work to be considered done in the scientific sense.
Yes, work is done because the bullock exerts a force on the cart, and the cart is displaced.
Because a force is applied to the book, and it is displaced through a height, satisfying both conditions for work.