Physics
General
Easy
Question
Assertion : A body falling freely under gravity becomes weightless.
Reason:
- a
- b
- c
- d
The correct answer is: a
Related Questions to study
physics
Assertion : body of trans 1 k 6 is moving with an acceleration of The rate of change of its momentum is 1 N
Reason : The rate of change of momentum of body = force applied on the body.
Assertion : body of trans 1 k 6 is moving with an acceleration of The rate of change of its momentum is 1 N
Reason : The rate of change of momentum of body = force applied on the body.
physicsGeneral
physics
Assertion : Frictional forces are conservative forces.
Reason: Polential energy can be associated with frictional forces
Assertion : Frictional forces are conservative forces.
Reason: Polential energy can be associated with frictional forces
physicsGeneral
physics
When forces F1,F2,F3 are acting on a particle of mass m such that F2 and F3 are mulually perpendicelar. then the particle remains stationary. If the force F1 is now removed than the acceleration of the particle is
When forces F1,F2,F3 are acting on a particle of mass m such that F2 and F3 are mulually perpendicelar. then the particle remains stationary. If the force F1 is now removed than the acceleration of the particle is
physicsGeneral
physics
The minimum force required to start pushing a body up a rough (coefficient of ) inclined plane is F1. While the minimum force needed to prevent it from sliding down is F2. If the inclined plane makes an angle 
from the horizontal. such that than 
the ratio 
is
The minimum force required to start pushing a body up a rough (coefficient of ) inclined plane is F1. While the minimum force needed to prevent it from sliding down is F2. If the inclined plane makes an angle from the horizontal. such that than the ratio is
physicsGeneral
physics
A mass of 6 kg is suspended by a rope of length 2 m form the ceiling . A force of 50 N in the horizental direction is applied at the mid Point P of the rope as shown in figure. what is the angle the rope makes. with the vertical in equilibrium ? (g=10 ms2) Neglect mass of the rope:
A mass of 6 kg is suspended by a rope of length 2 m form the ceiling . A force of 50 N in the horizental direction is applied at the mid Point P of the rope as shown in figure. what is the angle the rope makes. with the vertical in equilibrium ? (g=10 ms2) Neglect mass of the rope:
physicsGeneral
physics
With what acceleration (a) should a bot descend so that a block of mass M placed in it exerts a force 
on the floor of the box?
With what acceleration (a) should a bot descend so that a block of mass M placed in it exerts a force on the floor of the box?
physicsGeneral
physics
Two bodies A and B each of mass m are fixed together by a massless spring A force F acts on the mass B as shown in figure. At the instant shown, a body A has an aceclration a. what is the acceleration of B
Two bodies A and B each of mass m are fixed together by a massless spring A force F acts on the mass B as shown in figure. At the instant shown, a body A has an aceclration a. what is the acceleration of B
physicsGeneral
physics
A balloon has a mass of 10 g in air. The air escapes from the balloon at a uniform rate with a velocity of 5 cm/s and the balloon shrinks completely in 2.5sec. calculate the average force acting on the balloon.
A balloon has a mass of 10 g in air. The air escapes from the balloon at a uniform rate with a velocity of 5 cm/s and the balloon shrinks completely in 2.5sec. calculate the average force acting on the balloon.
physicsGeneral
physics
The motion of a particle of a mass m is describe by y=
. Find the once acting on the particle
The motion of a particle of a mass m is describe by y=. Find the once acting on the particle
physicsGeneral
physics
A block of mass m=4 kg is placed over a rough inclined plane as shown in figure, The coefficient of friction between the block and plane is r=0.6.A force F=10 N is applied on the block of an angle at 30.The contact force between the block and the plane is
A block of mass m=4 kg is placed over a rough inclined plane as shown in figure, The coefficient of friction between the block and plane is r=0.6.A force F=10 N is applied on the block of an angle at 30.The contact force between the block and the plane is
physicsGeneral
Maths-
Let 
Let
Maths-General
physics
The upper half of an inclined plane of inclination is perfectly smooth while the lower half is rough A body starting from the rest at top come back to rest at the bottom, then the coefficient of friction for the lower half is given by……
The upper half of an inclined plane of inclination is perfectly smooth while the lower half is rough A body starting from the rest at top come back to rest at the bottom, then the coefficient of friction for the lower half is given by……
physicsGeneral
physics
A block of mass m =2 kg is resting on a rough inclined plane of inclination 300 as shown in fignre The coefficient of friction between the block and the plane is=0.5 . What minimam force shald be applied perpendicular to the plane of block does not slip on the plane ?(g=10ms-2)
A block of mass m =2 kg is resting on a rough inclined plane of inclination 300 as shown in fignre The coefficient of friction between the block and the plane is=0.5 . What minimam force shald be applied perpendicular to the plane of block does not slip on the plane ?(g=10ms-2)
physicsGeneral
physics
A car of mass 1000 kg travelling at 32 m/s cleches into a rear of a truck of mass 8000 kg moving in the same direction with a velocity of 4m/s. After the collision the car bounces with a velocity of 8ms-1 The velocity of truck after the impact is..m/s
A car of mass 1000 kg travelling at 32 m/s cleches into a rear of a truck of mass 8000 kg moving in the same direction with a velocity of 4m/s. After the collision the car bounces with a velocity of 8ms-1 The velocity of truck after the impact is..m/s
physicsGeneral
Physics
As shown in figure, the block of 2 kg at one end and the other of 3 kg at the other end of a light string are connected. It the system remains stationary find the magnitude and direction of the frictional force,(g=10ms2)
As shown in figure, the block of 2 kg at one end and the other of 3 kg at the other end of a light string are connected. It the system remains stationary find the magnitude and direction of the frictional force,(g=10ms2)
PhysicsGeneral
