What is work ? Give me full definition.
Answers
Explanation:
work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, it is often represented as the product of force and displacement.
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➽ The product of force and displacement. If an object is acted upon by a force, work done is nothing but the product of the magnitude of this force and the displacement of the object caused by the force. It is important that displacement occurs in the process.
➽ If there is no displacement, work done turns out to be zero. This is the reason why physicists say that a person trying to move a heavy object is doing no work. Although the person is applying force with a lot of energy, the heavy object restricts it to move itself from its position.
➽ Hence, there is no displacement happening and the work done is zero.
Displacement due to a force can happen in any direction. When force is applied on an object, a component of force can either be present in the same direction of displacement or in the opposite direction of displacement.
➽ Positive work is done if the direction of displacement is the same as the direction of force. Negative work is done if the direction of displacement is opposite to the direction of force.
★ Now, let us understand the equation of work.
★ W = F × d
Here,
★ F is the force acting on an object
★ d is the displacement of the object caused by the force
★ W is the work done by the force F on the object