SSC MTS EXAM

SSC

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
On an inclined plane, if gravity overcomes friction on an object what will happen?
A
The box will slide up
B
The box will stay in place
C
The box will slide down
D
Depends on the problem
Explanation: 

Detailed explanation-1: -The object will subsequently accelerate down the inclined plane due to the presence of an unbalanced force. The parallel component of the force of gravity causes this acceleration. The parallel component of the force of gravity is the net force.

Detailed explanation-2: -Static friction prevents sliding Static friction is the force holding an object in place on an incline, such as the cheese in Figure 1. The friction force points against the direction that the object would slide without friction. Static friction keeps gravity from pulling the cheese down the incline.

Detailed explanation-3: -Intuitive explanation: Going up: friction and gravity work together; the block decelerates quickly. Going down: friction and gravity work in the opposite direction; the block accelerates slowly. Sliding up takes less time.

Detailed explanation-4: -Sliding friction is friction that acts on objects when they are sliding over a surface. Sliding friction is weaker than static friction.

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