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A body starts from rest on a long inclin...

A body starts from rest on a long inclined plane of slope `45^(@)` . The coefficient of friction between the body and the plane varies as `mu = 0.3 x` , where x is the distance travelled down the plane. The body will have maximum speed (for `g = 10 m//s^(2)` ) when x =

A

9.8 m

B

27m

C

12 m

D

3.33m

Text Solution

Verified by Experts

The correct Answer is:
D
When the body has maximum speed then
`mu=0.3x =tan45^(@) " ":. X=3.33m`
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