A solid sphere rolls down without slipping from rest on an ${\rm{3}}{{\rm{0}}^0}$ incline. Its linear acceleration is

JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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A solid sphere rolls down without slipping from rest on an

\mathrm{3}{\mathrm{0}^0}

incline. Its linear acceleration is

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Correct option: B

\frac{{5g}}{{14}}

Option B (

\frac{{5g}}{{14}}

) is correct because the linear acceleration is calculated using the formula for rolling without slipping on an incline, considering the moment of inertia of a solid sphere.

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It is easier for a swimmer jumping into water from a height to describe a loop in the air by A uniform thin rod

\mathrm{AB}

of length

\mathrm{L}

has linear mass density

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

, where

x

is measured from

\mathrm{A}

. If the

\mathrm{CM}

of the rod lies at a distance of

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

from

\mathrm{A}

, then a and

\mathrm{b}

1.0 \mathrm{~g}

is rotating in a circle of diameter

8 \mathrm{~cm}

. Its moment of inertia will be The angular velocity of a particle is given by

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

then its angular acceleration of the particle at

t = 1\,sec

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