Question

Match the columns

Column I		Column II
i	Zero gravity	p	an SHM is definitely not possible
ii	No restoring force	q	an SHM is definitely possible
iii	Mechanical energy remains conserved	r	an SHM may be possible
iv	displacement of a particle from a reference level is given by $y=\sin ^{2} \omega t$	s	Can't say

Now, select the correct option from the codes given below

• A. i - (r) , ii - (p) , iii - (r) , iv - (q)
• B. i - (p) , ii - (q) , iii - (r) , iv - (s)
• C. i - (q) , ii - (p) , iii - (r) , iv - (s)
• D. i - (p) , ii - (r) , iii - (p) , iv - (q)

Answer 1

Answer: (A)

For (p): In zero gravity, SHM may or may not be possible, it depends upon system. For example, a simple pendulum will not perform SHM, but a springblock system can perform SHM in zero gravity.
For (q): If no restoring force, then SHM is definitely not possible.
For (r): Mechanical energy may be conserved in motions other than SHM.
For (s): $y=\sin ^{2} \omega t$ represents an SHM.