Friction question including inclined plane

[nepal]

Homework Statement

Starting from rest , a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is ,
a)0.275
b)0.75

please answer with working

Homework Equations

The Attempt at a Solution

 

[SammyS]

Homework Statement

Starting from rest , a body slides down a 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is ,
a)0.275
b)0.75

please answer with working

Homework Equations

The Attempt at a Solution

Hello nepal. Welcome to PF !

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