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Question

A truck of mass m is moved under a force F. If the truck is then loaded with an object of mass equal to the mass of the truck and the driving force is halved, then the acceleration becomes:

A
Half
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B
One-third
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C
One-fourth
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D
One-eighth
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Solution

The correct option is A One-fourth
F=ma
According to the question, body of same mass is loaded.
Total Mass = m+m=2m
Force =12F
F=ma
12F=2ma
a=F4m
So, acceleration becomes 1/4 times

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