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Two forces are acting on body vec(F)(1)=...

Two forces are acting on body `vec(F)_(1)=-(50-t^(2))hat(j)` Newton and `vec(F)_(2)=[(5-t)hat(i)+t^(2)hat(j)]` Newton, find when this body will be in equilibrium

A

10 sec

B

2 sec

C

5 sec

D

7 sec

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Verified by Experts

The correct Answer is:
D
`vec(F)_(1)+t=0`
`(5-t)hat(i)+[t^(2)-50+t^(2)]hat(j)=0`
t = 5
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