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InterviewSolution
| 1. |
Define work and types of work with example |
| Answer» \tWhen the direction of applied force is in the direction of displacement then work done is said to be positive. e.g.\xa0When a body falls under the action of gravity, {tex}\\theta = 0 ^ { \\circ }{/tex}\xa0\tWhen the direction of applied force is opposite to\xa0the direction of displacement then work done is said to be negative. e.g. When brakes are applied on a moving vehicle work done by a braking force is negative.\tWhen the direction of applied force is perpendicular to\xa0the direction of displacement then work done is zero. e.g. A coolie carrying a load on his head moves on a horizontal platform, {tex}\\theta = 90 ^ { \\circ }{/tex} work done is zero. | |