JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Application +4 | -1

An ice stacker spins at

3\, \pi\, rad \, s^{-1}

with her arms extended. If her moment of inertia with arms folded is

75 \%

of that with arms extended, her angular velocity when she folds her arms is

View answer and explanation

Correct option: D

4 \,\pi \,{rad} \,{s}^{-1}

Option C (

10 {~N}

) is correct because the conservative force is the negative gradient of the potential energy function, evaluated at x=1 m.

More Questions from SYSTEM OF PARTICLES

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\mathrm{AB}

\mathrm{L}

\mu(x)=a+\frac{b x}{L}

x

\mathrm{A}

\mathrm{CM}

\left(\frac{7}{12}\right) \mathrm{L}

\mathrm{A}

\mathrm{b}

1.0 \mathrm{~g}

8 \mathrm{~cm}

\omega = {t^4} + 2{t^3}

t = 1\,sec

\left( {rad\,{s^{ - 2}}} \right)