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Cube of mass m kept on rough horizontal ...

Cube of mass `m` kept on rough horizontal surface. Two insects each mass `m`. Moving in the cube with equal acceleration. `a_(0)` from `D` to `E` and `H` to `F` what is the frictional force by ground on the tube.

A

`(m+2m)a_(0)`

B

`(sqrt(5))/(sqrt(2))ma_(0)`

C

`2ma_(0)`

D

`Ma_(0)sqrt(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`f_(x)=(ma_(0))/(sqrt(2))f_(z)=2m(a_(0))/(sqrt(2))`

`f=sqrt((f_(x))^(2)+f_(y)^(2))=ma_(0) (sqrt(5))/(sqrt(2))ma_(0)`
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