JEE Main 2021 (Online) 27th July Evening Shift | Rotational Motion Question 36 | Physics

JEE Main 2021 (Online) 27th July Evening Shift

Numerical

-1

In the given figure, two wheels P and Q are connected by a belt B. The radius of P is three times as that of Q. In case of same rotational kinetic energy, the ratio of rotational inertias $$\left( {{{{I_1}} \over {{I_2}}}} \right)$$ will be x : 1. The value of x will be _____________.
JEE Main 2021 (Online) 27th July Evening Shift Physics - Rotational Motion Question 36 English

JEE Main 2021 (Online) 27th July Evening Shift Physics - Rotational Motion Question 36 English

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JEE Main 2021 (Online) 25th July Evening Shift

Numerical

-1

A solid disc of radius 20 cm and mass 10 kg is rotating with an angular velocity of 600 rpm, about an axis normal to its circular plane and passing through its centre of mass. The retarding torque required to bring the disc at rest in 10 s is ____________ $$\pi$$ $$\times$$ 10^$$-$$1 Nm.

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JEE Main 2021 (Online) 25th July Morning Shift

Numerical

-1

A particle of mass 'm' is moving in time 't' on a trajectory given by

$$\overrightarrow r = 10\alpha {t^2}\widehat i + 5\beta (t - 5)\widehat j$$

Where $$\alpha$$ and $$\beta$$ are dimensional constants.

The angular momentum of the particle becomes the same as it was for t = 0 at time t = ____________ seconds.

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JEE Main 2021 (Online) 22th July Evening Shift

Numerical

-1

The centre of a wheel rolling on a plane surface moves with a speed v₀. A particle on the rim of the wheel at the same level as the centre will be moving at a speed $$\sqrt x {v_0}$$. Then the value of x is _____________.

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