1

JEE Main 2020 (Online) 3rd September Evening Slot

Numerical

+4

-0

A block starts moving up an inclined plane of inclination 30

^{o}with an initial velocity of v_{0}. It comes back to its initial position with velocity $${{{v_0}} \over 2}$$. The value of the coefficient of kinetic friction between the block and the inclined plane is close to $${I \over {1000}}$$. The nearest integer to I is____.Your input ____

2

JEE Main 2020 (Online) 3rd September Morning Slot

Numerical

+4

-0

A cricket ball of mass 0.15 kg is thrown
vertically up by a bowling machine so that it
rises to a maximum height of 20 m after leaving
the machine. If the part pushing the ball applies
a constant force F on the ball and moves
horizontally a distance of 0.2 m while launching
the ball, the value of F (in N) is (g = 10 ms

^{–2}) ____.Your input ____

3

JEE Main 2020 (Online) 2nd September Morning Slot

Numerical

+4

-0

A small block starts slipping down from a point B on an inclined plane AB, which is making an angle $$\theta $$ with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction $$\mu $$. It is found that the block comes to rest as it reaches the bottom (point A) of the inclined plane. If BC = 2AC, the coefficient of friction is given by $$\mu $$ = ktan $$\theta $$ . The value of k is _________.

Your input ____

4

JEE Main 2020 (Online) 7th January Morning Slot

Numerical

+4

-0

A particle (m = 1 kg) slides down a frictionless track (AOC) starting from rest at a point A (height 2 m). After reaching C, the particle continues to move freely in air as a projectile. When it reaching its highest point P (height 1 m), the kinetic energy of the particle (in )) is :

(Figure drawn is schematic and not to scale; take g = 10 ms

(Figure drawn is schematic and not to scale; take g = 10 ms

^{-2})Your input ____

Questions Asked from Work Power & Energy (Numerical)

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