can you please explain the question and the method
Asked by nivi95 | 17th May, 2009, 06:35: AM
Work done = force applied x displacement of the object.
When we pick things up , we are applying a force against the force of gravity.Hence the force ,which is equal to mass of the object x acceleration, we get F = mg ( where: g - acceleration due to gravity = 10m/s2)
The displacement is the height to which the porter lifts the baggage = 1.5m in the above case.
Work done = 15 x 10 x 1.5 = 225N
Answered by | 18th May, 2009, 08:29: PM
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