TG EAPCET 2024 (Online) 9th May Morning Shift | Rotational Motion Question 5 | Physics

A solid sphere rolls down without slipping from the top of an inclined plane of height 28 m and angle of inclination $30^{\circ}$. The velocity of the sphere, when it reaches the bottom of the plane is (Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ )

$20 \mathrm{~ms}^{-1}$

$10 \mathrm{~ms}^{-1}$

$28 \mathrm{~ms}^{-1}$

$14 \mathrm{~ms}^{-1}$

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

Moon revolves around the earth in an orbit of radius $R$ with time period of revolution $T$. It also rotates about its own axis with a time period $T$. If mass of the moon is $M$ and its radius is $r$, the total kinetic energy of the moon is

$\frac{2 M \pi^2 R^2}{T^2}+\frac{4 M r^2 \pi^2}{5 T^2}$

$\frac{M \pi^2 R^2}{2 T^2}$

$\frac{4 M r^2 \pi^2}{5 T^2}$

$\frac{M \pi^2 R^2}{2 T^2}+\frac{4 M r^2 \pi^2}{5 T^2}$

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

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The spinning of the Diwali cracker 'ground chakkar' involves the concept of

conservation of mechanical energy

conservation of linear momentum

conservation of angular momentum

conservation of charge

TS EAMCET 2023 (Online) 12th May Morning Shift

MCQ (Single Correct Answer)

-0

If the radius of the earth becomes $x$ times its present value, the new period of rotation in hours is

$6 x^2$

$12 x^2$

$24 x^2$

$48 x^2$

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