Q.

Four types of oscillatory systems: a simple pendulum; a physical pendulum; a torsional pendulum and a spring-mass system, each of same time period is taken to the Moon. If time periods are measured on the moon, which system or systems will have it unchanged? 

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a

only spring-mass system

b

spring-mass system and torsional pendulum

c

spring-mass system and physical pendulum

d

none of these

answer is B.

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Detailed Solution

Both the spring-mass system and torsional pendulum have no dependence on gravitational acceleration for their time periods.

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Four types of oscillatory systems: a simple pendulum; a physical pendulum; a torsional pendulum and a spring-mass system, each of same time period is taken to the Moon. If time periods are measured on the moon, which system or systems will have it unchanged?