AP EAPCET 2024 - 23th May Morning Shift | Rotational Motion Question 3 | Physics

A uniform metal solid sphere is rotating with angular speed $\omega_0$ about diameter. If the temperature is raised by $50^{\circ} \mathrm{C}$. The angular speed will be [given $\alpha_{\text {metal }}=20 \times 10^{-5 \circ} \mathrm{C}^{-1}$ ]

$0.95 \omega_0$

$0.96 \omega_0$

$0.98 \omega_0$

$\omega_0$ (angular velocity is same)

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

A ring and a disc of same mass and same diameter are rolling without slipping. Their linear velocities are same, then the ratio of their kinetic energy is

0.75

1.33

0.5

2.66

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

The moment of inetia of a rod about an axis passing through its centre and perpendicular to its length is $\frac{1}{12} M L^2$, where $M$ is the mass and $L$ is the length of the rod. The rod is bent in the middle, so that the two halves make an angle of $60^{\circ}$. The moment of inertia of the bent rod about the same axis would be

$\frac{1}{48} M L^2$

$\frac{1}{12} M L^2$

$\frac{1}{24} M L^2$

$\frac{1}{8 \sqrt{3}} M L^2$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

A uniform rod of length $2 L$ is placed with one end in contact with the earth and is then inclined at an angle $\alpha$ to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be

$\sqrt{\frac{3 g \sin \alpha}{2 L}}$

$\sqrt{\frac{2 L}{3 g \sin \alpha}}$

$\sqrt{\frac{6 g \sin \alpha}{L}}$

$\sqrt{\frac{L}{g \sin \alpha}}$

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