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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
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MCQ Questions for CBSE Class 1 with Answers
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Rotational Inertia Class 12 MCQ Questions With Answers
1.
A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,
her moment of inertia increases and her angular speed decreases.
her moment of inertia decreases and her angular speed increases.
her moment of inertia increases and her angular speed increases.
her moment of inertia increases and her angular speed remains the same.
2.
When this girl lets go of her string, what happens to the ball?
it flies straight due to law of inertia
it flies straight due to law of centripetal force
it curves due to rotational inertia
it curves due to its tangential speed
3.
What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?
5 m/s2
17.63 m/s2
10 m/s2
8.81 m/s2
4.
Which forms of energy are present for objects rolling down an incline?
Gravitational potential energy
Rotational kinetic energy
Kinetic energy
All of above
5.
What's the centripetal acceleration of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?
8.23 m/s2
10.54 m/s2
12.86 m/s2
17.39 m/s2
6.
The train wheel in the picture has radius = 1.00 meter and it's mass is 352 kg. What is it's Moment Of Inertia?
320 kg^2
352 kg*m^2
176 kg*m^2
141.75 m^2
7.
When 6.0 Nm of torque is applied to a wheel it constantly accelerates at 30 rad/s^2. What is the moment of inertia of the wheel? Hint: T = IαHint:\ T\ =\ I\alphaHint: T = Iα
2 Nm22\ Nm^22 Nm2
0.20 Nm20.20\ Nm^20.20 Nm2
20.0 Nm220.0\ Nm^220.0 Nm2
Undefined because it′s 10Undefined\ because\ it's\ \frac{1}{0}Undefined because it′s 01
8.
If the same torque is applied on a hoop (I=MR2) and a solid disk (I=1/2MR2), after 5s which object will be moving faster?
Hoop
Solid Disk
9.
The drum of a washing machine rotates 1800 times in 3 minutes. What is the period?
0.1 s
0.2 s
0.3 s
0.5 s
10.
What is the angular acceleration of an object that has rotational inertia of 4 kg.m2 and submitted to a torque of 8 N.m?
0.5 rad/s2
2 rad/s2
4 rad/s2
8 rad/s2
11.
What would happen to the length of one day if Earth's moment of inertia were to increase?
The day would be longer.
The day would be shorter.
The day would stay the same.
All of above
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