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JEE Main 2022 (Online) 24th June Morning Shift
Numerical
+4
-1
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A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10 g are put one on the top of the other at the 10.0 cm mark the scale is found to be balanced at 40.0 cm mark. The mass of the metre scale is found to be x $$\times$$ 10$$-$$2 kg. The value of x is ___________.

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2
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
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A 2 kg steel rod of length 0.6 m is clamped on a table vertically at its lower end and is free to rotate in vertical plane. The upper end is pushed so that the rod falls under gravity, ignoring the friction due to clamping at its lower end, the speed of the free end of rod when it passes through its lowest position is ____________ ms$$-$$1. (Take g = 10 ms$$-$$2)
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3
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
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Consider a badminton racket with length scales as shown in the figure.

JEE Main 2021 (Online) 26th August Morning Shift Physics - Rotational Motion Question 72 English
If the mass of the linear and circular portions of the badminton racket are same (M) and the mass of the threads are negligible, the moment of inertia of the racket about an axis perpendicular to the handle and in the plane of the ring at, $${r \over 2}$$ distance from the end A of the handle will be ................ Mr2.
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4
JEE Main 2021 (Online) 27th July Evening Shift
Numerical
+4
-1
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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 73 English
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