Question

Draw a free body diagram (FBD) to show various forces acting on a body which is sliding on an inclined plane.

Answer 1

Newton's laws of motion , while considering cases on inclined plane motion.

Answer 2

When an object is kept on an inclined plane and slides when its downward component of force is equal to frictional force.

Consider, angle of the inclined plane as θ and coefficient of friction between the body and plane as $\mu$

If mass of the object is m, then the weight of the object is mg.

On inclined plane, consider components of the weight. Along the plane,

$F_x = mg sin\theta$

Perpendicular to it, $F_y = mg cos\theta$

The reaction force is $N = mg cos\theta$

Frictional force:

$f=\mu N = \mu mg cos \theta$

Refer to the attached diagram below.

Learn more about: Motion on inclined plane

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