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A body oscillates with SHM, accroding to...

A body oscillates with SHM, accroding to the equation, `x=(5.0m)cos[(2pirads^(-1))t+pi//4]`
At `t=1.5s`, calculate the `(a)` diplacement `(b)` speed and `(c)` acceleration of the body.

A

`-139.56 m//s^(2)`

B

`139.56 m//s^(2)`

C

`69.78 m//s^(2)`

D

`-69.78 m//s^(2)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-OSCILLATIONS-Assignment (Section - B) (OBJECTIVE TYPE QUESTIONS)
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  4. Time period of a particle executing SHM is 8 sec. At t=0 it is at the ...

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  8. A particle executes SHM according to equation x=10(cm)cos[2pit+(pi)/(2...

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  13. A body performs S.H.M. Its kinetic energy K varies with time t as ind...

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  14. A particle is performing SHM energy of vibration 90J and amplitude 6cm...

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  15. The variations of potential energy (U) with position x for three simpl...

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  16. If the particle repeats its motion after a fixed time interval of 8 s ...

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  17. A particle is executing SHM with total mechanical energy 90J and ampli...

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  18. A linear harmonic oscillator of force constant 6 xx 10^(5) N/m and amp...

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