1

JEE Main 2021 (Online) 20th July Evening Shift

Numerical

+4

-1

A body of mass 'm' is launched up on a rough inclined plane making an angle of 30$$^\circ$$ with the horizontal. The coefficient of friction between the body and plane is $${{\sqrt x } \over 5}$$ if the time of ascent is half of the time of descent. The value of x is __________.

Your input ____

2

JEE Main 2021 (Online) 18th March Morning Shift

Numerical

+4

-1

A bullet of mass 0.1 kg is fired on a wooden block to pierce through it, but it stops after moving a distance of 50 cm into it. If the velocity of bullet before hitting the wood is 10 m/s and it slows down with uniform deceleration, then the magnitude of effective retarding force on the bullet is 'x' N. The value of 'x' to the nearest integer is __________.

Your input ____

3

JEE Main 2021 (Online) 17th March Evening Shift

Numerical

+4

-1

A boy of mass 4 kg is standing on a piece of wood having mass 5 kg. If the coefficient of friction between the wood and the floor is 0.5, the maximum force that the boy can exert on the rope so that the piece of wood does not move from its place is __________ N. (Round off to the Nearest Integer) [Take g = 10 ms

^{-2}]Your input ____

4

JEE Main 2021 (Online) 17th March Evening Shift

Numerical

+4

-1

A body of mass 1 kg rests on a horizontal floor with which it has a coefficient of static friction $${1 \over {\sqrt 3 }}$$. It is desired to make the body move by applying the minimum possible force F N. The value of F will be ____________. (Round off to the Nearest Integer) [Take g = 10 ms

^{$$-$$2}]Your input ____

Questions Asked from Laws of Motion (Numerical)

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