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Question

A force F=(5^i+3^j) newton is applied over a particle which displaces it from its origin to the point r=(2^i1^j) metre. The work done on the particle is

 



Your Answer
A

- 7 joules

Your Answer
B

+ 13 joules

Correct Answer
C

+ 7 joules

Your Answer
D

+ 11 joules


Solution

The correct option is C

+ 7 joules


W=F.s=(5^i+3^j).(2^i^j)=103=7 J

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