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Machine Kinematics Multiple Choice Questions and Answers – Compound Pendulum

Questions
1 Which of the following shape of the body can be considered as compound pendulum?
A Cylindrical
B Cubical
C Cuboidal
D Any rigid body

Answer: Any rigid body
2 Compound pendulum needs to be spherical in shape.
A True
B False

Answer: False
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3 If the mass of the object is doubled then what will be the effect of time period of the compound pendulum?
A Doubled
B Remains same
C Halved
D Decreases by √2 times

Answer: Decreases by √2 times
4 If the mass moment inertia of the object is increased to 4 times then what will be the effect of time period of the compound pendulum?
A Doubled
B Remains same
C Halved
D Decreases by √2 times

Answer: Doubled
5 Calculate the time period of an object having mass moment of inertia = 100 Kg-m2, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.
A 14.1
B 15.2
C 13.3
D 12.9

Answer: 14.1
6 Calculate the frequency of vibration in Hz of an object having mass moment of inertia = 100 Kg-m2, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.
A 0.14
B 0.15
C 0.13
D 0.07

Answer: 0.07
7 Calculate the moment of inertia of an object having time period = 14 sec, mass of 10 Kg and the centre of gravity lies at a point 20 cm below the point of suspension.
A 94.1
B 95.2
C 93.3
D 97.4

Answer: 97.4
8 All simple pendulums are compound pendulums.
A True
B False

Answer: True
9 If the mass moment inertia of the object is increased to 4 times then what will be the effect of time period of the simple pendulum?
A Doubled
B Remains same
C Halved
D Decreases by √2 times

Answer: Remains same
10 Calculate the moment of inertia of an object having time period = 14 sec, mass moment of inertia= 100 Kg-m2 and the centre of gravity lies at a point 20 cm below the point of suspension.
A 9.1
B 9.2
C 9.3
D 10.2

Answer: 10.2

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