Work is a Scalar Quantity +ve Work -ve Work energy transferred to the object energy transferred from the object.

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Presentation transcript:

Work is a Scalar Quantity +ve Work -ve Work energy transferred to the object energy transferred from the object

Work Work Done Doing Work energy transferred to the object by the force Is the act of transferring the energy - Work has unit of energy ( Joule J)

Bead Wire

Bead Wire

Work done by a constant force is

- Work has another unit

How to find the net Work done by several forces? Find the work done by each force and then sum those works Find the net force then

Finding another expression for Work

- - -

O(b) x O(c) x O (a) x

Power Average PowerInstantaneous Power =

v but  or then

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