1.

A particle moves with simple harmonic motion in a straight line. In first tau s, after starting from rest it travels a distance a, and in next tau s it travels 2a, in same direction, then :

Answer»

time period of oscillations is `6tau`
amplitude of motion is 3a
time period of oscillations is `8tau`
amplitude of motion is 4a.

Solution :`A(1-cos OMEGA tau)=a,A(1-cos 2OMEGA tau)=3a`
`cos omega tau=(1-(a)/(A)),cos 2 omega tau=(1-(3a)/(A))`
`2(1-(a)/(A))^(2)-1=1-(3a)/(A)`
Solving the EQUATION `(a)/(A)=(1)/(2)impliesA=2a`
`cos omega tau=(1)/(2),T=6tau`
So correct choice is (a).


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