1

JEE Main 2021 (Online) 27th July Evening Shift

Numerical

+4

-1

A small block slides down from the top of hemisphere of radius R = 3 m as shown in the figure. The height 'h' at which the block will lose contact with the surface of the sphere is __________ m.

(Assume there is no friction between the block and the hemisphere)

(Assume there is no friction between the block and the hemisphere)

Your input ____

2

JEE Main 2021 (Online) 25th July Evening Shift

Numerical

+4

-1

A force of F = (5y + 20)$$\widehat j$$ N acts on a particle. The work done by this force when the particle is moved from y = 0 m to y = 10 m is ___________ J.

Your input ____

3

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.

Your input ____

4

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/s

^{2}).Your input ____

Questions Asked from Work Power & Energy (Numerical)

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