Question #afa31

1 Answer
A08
May 4, 2016

We are discussing inclined plane here which makes an angle theta with the horizontal.

Explanation:

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The weight W=mg of the body acts vertically downwards as shown in the figure.

The Normal reaction force R which is perpendicular to the surface of the inclined plane and is therefore, equal and opposite to the c osi n e component of the weight of the body. See the geometry, and angle theta

:. vec R=-mcdotvecgcostheta, or considering only the scalar parts

R=mcdotgcostheta

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