Motion in a Vertical Circle NEET Questions

Physics - Work, Energy, and Power

Motion in a Vertical Circle MCQ Questions


1.
A body of mass m is moving in a vertical circle of radius R. What is the tension at the lowest point if the speed is v?
A.
mg + mv²/R
B.
mg - mv²/R
C.
mv²/R
D.
Zero
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ANSWER :
A. mg + mv²/R
2.
What is the minimum speed required at the lowest point for a body to complete a vertical circle?
A.
√(5gR)
B.
√(2gR)
C.
√(3gR)
D.
√(gR)
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ANSWER :
A. √(5gR)
3.
The centripetal force at the highest point of a vertical circular motion is provided by:
A.
Gravitational force
B.
Tension in the string
C.
Normal force
D.
Both gravity and tension
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ANSWER :
A. Gravitational force
4.
A mass m is attached to a string and is whirled in a vertical circle. The tension in the string is least when the mass is at:

NEET - 2020

A.
The highest point
B.
The lowest point
C.
The mid-point
D.
All points have the same tension
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ANSWER :
A. The highest point
5.
In a vertical circular motion, when is the net force acting on the particle equal to the weight of the particle?
A.
At the highest point
B.
At the lowest point
C.
At the mid-point
D.
Always
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ANSWER :
A. At the highest point
6.
If the speed of a bob in a vertical circle at the lowest point is v, then at the highest point it is:
A.
v/2
B.
√(2gR)
C.
√(3gR)
D.
Zero
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ANSWER :
B. √(2gR)