An object of mass moves with acceleration down a rough incline . Which of the following forces should appear in a free-body diagram of the object ?
A) The gravitational force exerted by the planet
B) in the direction of motion
C) The normal force exerted by the incline
D) The friction force exerted by the incline
E) The force exerted by the object on the incline
Correct Answer (A ),( C ), (D )
It states that when two bodies interact , they apply forces to one and another that are equal in magnitude and opposite in direction .
A free body diagram shows the force exerted on the object by other objects , and the net force is sum of those forces.
Question: In Figure P5.101, the incline has mass M and is fastened to the stationary horizontal tabletop. The block of mass m is placed near the bottom of the incline and is released with a quick push that sets it sliding upward. The block stops near the top of the incline as shown in the figure and then slides down again, always without friction. Find the force that the table top exerts on the incline throughout this motion in terms of m, M, g and θ.
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