MHT CET 2021 22th September Morning Shift | Circular Motion Question 40 | Physics

The angular displacement of body performing circular motion is given by $$\theta=5 \sin \frac{\pi t}{6}$$. The angular velocity of the body at $$t=3$$ second will be $$\left[\sin \frac{\pi}{2}=1, \cos \frac{\pi}{2}=0\right]$$

$$5 \frac{\mathrm{rad}}{\mathrm{s}}$$

$$1 \frac{\mathrm{rad}}{\mathrm{s}}$$

$$2.5 \frac{\mathrm{rad}}{\mathrm{s}}$$

zero $$\frac{\mathrm{rad}}{\mathrm{s}}$$

MHT CET 2021 22th September Morning Shift

MCQ (Single Correct Answer)

-0

A body performing uniform circular motion of radius 'R' has frequency 'n'. It centripetal acceleration is

8 $$\pi^2$$nR$$^2$$

4 $$\pi^2$$n$$^2$$R

4 $$\pi^2$$n$$^2$$R$$^2$$

8 $$\pi^2$$n$$^2$$R

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

The angle of banking '$$\theta$$' for a meter gauge railway line is given by $$\theta=\tan ^{-1}\left(\frac{1}{20}\right)$$. What is the elevation of the outer rail above the inner rail?

$$20 \mathrm{~cm}$$

$$10 \mathrm{~cm}$$

$$0.2 \mathrm{~cm}$$

$$5 \mathrm{~cm}$$

MHT CET 2021 21th September Morning Shift

MCQ (Single Correct Answer)

-0

A particle moves in a circular orbit of radius '$$r$$' under a central attractive force, $$F=-\frac{k}{r}$$, where $$\mathrm{k}$$ is a constant. The periodic time of its motion is proportional to

$$r^{\frac{1}{2}}$$

$$\mathrm{r}^{\frac{2}{3}}$$

$$r$$

$$r^{\frac{3}{2}}$$

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