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  • A particle falls freely near the surface of the earth. With respect to any point fixed on the ground (other than vertically below the particle) on the ground. Which of the following statement is in

A particle falls freely near the surface of the earth. With respect to any point fixed on the ground (other than vertically below the particle) on the ground. Which of the following statement is incorrect?

Option: 1

The angular momentum of the particle about 0 is increasing


Option: 2

Torque of the gravitational force on the particle about 0 is decreasing


Option: 3

The moment of inertia of the particle about 0 is decreasing


Option: 4

 The angular velocity of the particle about 0 is increasing.


Answers (1)

best_answer

 Option (b) is incorrect.

\begin{aligned} & \vec{r}=\vec{r} \times m \vec{g} \\ & \vec{c}=m[\vec{r} \times \vec{g}] \end{aligned}

\begin{aligned} & \vec{c}=m[\dot{x} \hat{\imath}+y \hat{\jmath}] \times[-g \hat{\jmath}] \\ & \vec{c}=-m g x \hat{k} \end{aligned}

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manish painkra

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