Question

If a plane is inclined at the angle of repose and an object placed on it is

given a velocity of 1 m/s down the plane, the object __________.

a) moves with constant velocity

b) retards

c) accelerates

d) none of the above​

Answer 1

Answer:

A

Explanation:

Answer 2

If a plane is inclined at the angle of repose and an object placed on it is given a velocity of 1m/s down the plane , the object accelerates.

Explanation :

• A surface that makes some angle with the horizontal is known as an inclined plane. The angle made by the inclined plane with the horizontal is known as the angle of inclination.
• When the angle of inclination is small, the object kept on the plane remains stationary. This is because a force downward along the plane is less than the limiting force of friction.
• If the angle of inclination is slowly increased, then at one stage, the object just starts sliding down. This minimum angle of inclination is known as the angle of repose.
• Angle of repose is therefore defined as the angle that an inclined plane makes with the horizontal when a body placed on it just starts sliding.
•  If an object is placed on the angle of repose,  it tends to move     down that plane naturally .

• With an initial velocity of 1 m/s and the object's natural tendency to move down the plane ,Hence ,  it will start accelerating .

ANSWER : C - accelerates