JEE Main Physics question

Work done by a frictional force is

(A)Negative
(B)Positive
(C)Zero
(D)All of the aboveCorrect

Answer: (D)

Solution

Friction can do negative work (opposing the relative sliding of a body, the usual case), positive work (e.g., static friction on a driving wheel propelling a vehicle forward), or zero

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-153421