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Below given figure shows a lamina in X-Y...

Below given figure shows a lamina in X-Y plane. Two axes Z and Z1 pass perpendicular to its plane. A force `vecF` acts in the plane of lamina at point P as shown. Which of the following are true? (The point Pis closer to Z1-axis than the Z-axis.)

A

Torque `tau` caused by F about Z axis is along `-hatk`

B

Torque `tau` caused by F about Z1 axis is along`-hatk`

C

Torque `tau` caused by Fabout Z axis is greater in magnitude than that about Z axis.

D

Total torque is given `tau= tau +tau'`

Text Solution

Verified by Experts

The correct Answer is:
B,C
`vectau` caused by `vecF` about Z-axis is along `hatk`
(b) `vectau` caused by `vecF` about Z.-axis is along `-hatk`
© `vectau` caused by `vecF` about Z-axis is greater in magnitude than that about Z.-axis.
(d) Total torque `vectaunevectau+vectau` because `vectau` and `vectau` are not about common axis.
The correct options are (b) and (c).
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