CBSE Class 9 Answered
What is the work done by frictional force on an object when dragged along a rough surface?
Asked by Topperlearning User | 06 Feb, 2018, 10:03: AM
Expert Answer
Frictional force is always opposing the relative motion of the body. When a body is dragged along a rough surface, the frictional force will be acting in the direction opposite to the displacement. The angle between the frictional force and the displacement of the body will be 180o. Thus, the work done by the frictional force will be negative.
Answered by | 06 Feb, 2018, 12:03: PM
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