MCQ
The torque on a planet about the centre of sun is ..............
- ✓Zero
- BNegative
- CPositive
- DDepend on mass of planet
✓
Answer
Correct option: A.
Zero
a
(a)
(a)
Force of gravity is acting on the planet,
Torque of force of gravity $=\vec{r} \times \bar{F}_g=r F_g \sin \theta$
Since $\theta=180^{\circ}, \tau=0$
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