The net applied force on a body in uniform circular motion should always be

- A
Constant in magnitude and parallel to direction of motion

- B
Constant in magnitude and perpendicular to direction of motion

- C
Gravitational in nature

- D
Zero

A particle is moving with a constant speed $v$ in a circle. What is the magnitude of average velocity after half rotation

A car is going round a circle of radius $R_1$ with constant speed. Another car is going round a circle of radius $R_2$ with constant speed. If both of them take same time to complete the circles, the ratio of their angular speeds and linear speeds will be .........

As shown in the figure, a particle is moving with constant speed $\pi\,m / s$. Considering its motion from $A$ to $B$, the magnitude of the average velocity is:

- [JEE MAIN 2023]

The radius of circle the period of revolution initial position and sense of revolution are indicated in the figure.

$y-$projection of the radius vector of rotating particle $\mathrm{P}$ is

- [NEET 2019]

A stone of mass $900 \mathrm{~g}$ is tied to a string and moved in a vertical circle of radius $1 \mathrm{~m}$ making $10\ \mathrm{rpm}$. The tension in the string, when the stone is at the lowest point is (if $\pi^2=9.8$ and $g=9.8 \mathrm{~m} / \mathrm{s}^2$ )

- [JEE MAIN 2024]