Question

explain what is meant by work obtain an expression for word done by a constant force?​

Answer 1

Answer:

Write an expression for the work done when force acts on an object in the direction of its displacement. When a force F displaces a body through a distance S in the direction of the applied force, then the work done W on the body is given by the expression: Work done = Force — Displacement.

Explanation:

Work. Work is done when a force is applied, at least partially, in the direction of the displacement of the object. If that force is constant then the work done by the force is the dot product of the force with the displacement: W = F ⃗ ∙ d ⃗ .

Answer 2

Explanation:

The work done by a constant force can be defined as the product of the displacement of the object (to which the force is applied) and the component of the constant force which is parallel to the direction of displacement.

Work = Force×Displacement Work and work done are the same things.

1 unit of work w = f x s 1 J

= 1 N x 1 m 1 J = 1 Nm

units of work :- work done is said to be 1 joule if one N force acting on a body displaces a body through 1 m in its own direction .