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Question
What do you understand by work?
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Solution
Work is the product of force and distance. In physics, a force is said to do work if, when acting, there is a movement of the point of application in the direction of the force.
For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). When the force is constant and the angle between the force and the displacement is θ, then the work done is given by W = Fs cos θ.
Work transfers energy from one place to another, or one form to another.
The SI unit of work is the joule (J).
Work is the product of force and distance. In physics, a force is said to do work if, when acting, there is a movement of the point of application in the direction of the force.
For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). When the force is constant and the angle between the force and the displacement is θ, then the work done is given by W = Fs cos θ.
Work transfers energy from one place to another, or one form to another.
The SI unit of work is the joule (J).
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