Work Energy And Power Question 220
Question: Work done by static friction on an object
Options:
A) May be positive
B) must be negative
C) Must be zero
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Consider the blocks shown in the figure to be moving together due to friction between them.
The free body diagrams of both the blocks .
Work done by static friction on A is positive and on B is negative
