# physics

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A 75 kg box slides down a 25o ramp with an acceleration of 3.6 m/s2. Find the coefficient of kinetic friction between the box and the ramp.

• physics -

The component of gravity down the plane is mg*SinTheta
The normal component of mg*CosTheta

So
Net force=ma
gravitydownramp-friction=ma
mgSinTheta-mg*mu*CosTheta=ma
solve for mu.

• physics -

0.06

• physics -

0.061

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