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JEE Main 2021 (Online) 25th July Morning Shift
Numerical
+4
-1
In the reported figure, two bodies A and B of masses 200 g and 800 g are attached with the system of springs. Springs are kept in a stretched position with some extension when the system is released. The horizontal surface is assumed to be frictionless. The angular frequency will be ____________ rad/s when k = 20 N/m.

JEE Main 2021 (Online) 25th July Morning Shift Physics - Work Power & Energy Question 40 English
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2
JEE Main 2021 (Online) 20th July Morning Shift
Numerical
+4
-1
In a spring gun having spring constant 100 N/m a small ball 'B' of mass 100 g is put in its barrel (as shown in figure) by compressing the spring through 0.05 m. There should be a box placed at a distance 'd' on the ground so that the ball falls in it. If the ball leaves the gun horizontally at a height of 2 m above the ground. The value of d is _________ m. (g = 10 m/s2).

JEE Main 2021 (Online) 20th July Morning Shift Physics - Work Power & Energy Question 43 English
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3
JEE Main 2021 (Online) 18th March Evening Shift
Numerical
+4
-1
A ball of mass 4 kg, moving with a velocity of 10 ms$$-$$1, collides with a spring of length 8 m and force constant 100 Nm$$-$$1. The length of the compressed spring is x m. The value of x, to the nearest integer, is ____________.
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4
JEE Main 2021 (Online) 18th March Morning Shift
Numerical
+4
-1
As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed of the particle at B is x m/s. (Take g = 10 m/s2)

The value of 'x' to the nearest integer is __________.

JEE Main 2021 (Online) 18th March Morning Shift Physics - Work Power & Energy Question 46 English
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