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A cyclist moves with uniform velocity do...

A cyclist moves with uniform velocity down a rough inclined plane of inclination `alpha`. Total mass of cycle & cyclist is m. Then the magnitude and direction of force acting on the cycle from inclined plane is :

A

`mg cos alpha` perpendicularly into the inclined plane

B

`mg cos alpha` perpendiculary outward of the inclined plane

C

mg perpendicularly outward of the inclined plane

D

mg vertical upwards

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The correct Answer is:
d
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