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Question

A body executing SHM has a maximum velocity of 1ms1 and a maximum acceleration of 4ms2 . Its amplitude in metre is :

A
1
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B
0.75
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C
0.5
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D
0.25
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Solution

The correct option is D 0.25
A body executing SHM have Vmax=1ms1
and amax=4ms1
Since, vmax=rω ..(i)
and amax=ω2r ...(ii)
Where, ω= angular speed of SHM
r = amplitude of SHM
Dividing Eq. (ii) by the square of Eq. (i), we get
amaxv2max=ω2rr2ω2=1r
r=v2maxamax=1×14=14
r = 0.25 m
Amplitude of SHM = 0.25 m

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