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Home Questions JB7QM2SHNM
Target Exam

CUET

Subject

Physics

Chapter

Work Power Energy

Question:

A block m is kept stationary on the surface of an accelerating cage as shown on figure. At the given instant, study the following statements regarding.

A block m is kept stationary on the surface of an ...

i. Normal reaction performs positive work on the block.
ii. Frictional work done on the block is negative.
iii. No net work is done by normal reaction and friction on the block.
Now mark the correct answer.

Options:

Only statement (i) is correct.

Only statement (ii) is correct.

Only statement (iii) is correct.

All the statements are correct.

Correct Answer:

Only statement (i) is correct.

Explanation:
Since,the system move along x−axis and work done due to normal reaction will be positive. Since, there is no relative motion with respect to Encline work done by the friction is zero. Hence, option A is correct answer.

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