define work and state the type of work done with examples
Answers
Answer:
hi
Explanation:
work is said to be done when a force acting on a body displaces it through a certain distance.
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Answer:
Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. If the force is constant, work may be computed by multiplying the length of the path by the component of the force acting along the path. Work done on a body is accomplished not only by a displacement of the body as a whole from one place to another but also, for example, by compressing a gas, by rotating a shaft, and even by causing invisible motions of the particles within a body by an external magnetic force.
Explanation:
Types:Examples of Positive Work:
Examples of Positive Work:(1) When a spring is stretched, the work done by the stretching force is positive as the force acts in the direction of displacement of the spring.
Examples of Zero Work:
(i) The work done by the centripetal force acting on a body moving in a circle with uniform speed is zero as it is always at right angle to the direction of motion of the body.