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A block of mass m is placed in equilibri...

A block of mass `m` is placed in equilibrium on a moving plank. The maximum horizontal acceleration of the plank for `mu=0.2` is:

A

`2m//s^(2)`

B

`3m//s^(2)`

C

dependent on the mass `m`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
If block does not slide w.r.t platform
`F=ma` (i)
But `flemuN` (ii)
Form (i) and (ii), `malemumg`
`alemug`
Hence maximum acceleration of the plank is
`0.2xx10=2m//s^(2)` .
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