JEE Mains Physics 2002-2019 Solved Video Solutions
At time t=0s particle starts moving along the x− axis. If its kinetic energy increases uniformly with time ‘t’, the net force acting on it must be proportional to
27
Oct
At time t=0s particle starts moving along the x− axis. If its kinetic energy increases uniformly with time ‘t’, the net force acting on it must be proportional to At time t=0s particle starts moving along the x− axis. If its kinetic energy increases uniformly with time 't' the net force acting on it must [...]
This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements. Statement I: A point particle of mass m moving with speed v collides with stationary point particle of mass M. If the maximum energy loss possible given as f(1/2mv^2) then f=(m/M+m) Statement II: Maximum energy loss occurs when the particles get stuck together as a result of the collision.
27
Oct
This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements. Statement I: A point particle of mass m moving with speed v collides with stationary point particle of mass M. If the maximum energy loss possible given as f(1/2mv^2) then [...]
When a rubber band is stretched by a distance x , if exerts restoring force of magnitude F=ax+bx^2 where a and b are constant . The work in stretching the unstretched rubber band by L is
27
Oct
When a rubber band is stretched by a distance x , if exerts restoring force of magnitude F=ax+bx^2 where a and b are constant . The work in stretching the unstretched rubber band by L is if exerts restoring force of magnitude F=ax+bx^2 where a and b are constant . The work in stretching the [...]
A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in they y direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to :
27
Oct
A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in they y direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to : A particle of mass m moving in [...]
A time dependent force F=6t acts on a particle of mass 1kg. If the particle starts from rest, the work done by the force during the first 1sec. will be
27
Oct
A time dependent force F=6t acts on a particle of mass 1kg. If the particle starts from rest, the work done by the force during the first 1sec. will be A time dependent force F=6t acts on a particle of mass 1kg. If the particle starts from rest the work done by the force during [...]
In a collinear collision, a particle with an initial speed v0 strikes a stationary particle of the same mass. If the final total kinetic energy is 50% greater than the original kinetic energy, the magnitude of the relative velocity between the two particles, after collision, is :
27
Oct
In a collinear collision, a particle with an initial speed v0 strikes a stationary particle of the same mass. If the final total kinetic energy is 50% greater than the original kinetic energy, the magnitude of the relative velocity between the two particles, after collision, is : a particle with an initial speed v0 strikes [...]
An alpha-particle of mass m suffers 1-dimentinal elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing 64% of its initial kinetic energy. The mass of the nucleus is :
27
Oct
An alpha-particle of mass m suffers 1-dimentinal elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing 64% of its initial kinetic energy. The mass of the nucleus is : A body of mass m=10−2kg is moving in a medium and experiences a frictional force F=−KV^2. Its initial speed [...]
A particle which is experiencing a force, given by F =3i −12j, undergoes a displacement of d =4i. If the particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement?
27
Oct
A particle which is experiencing a force, given by F =3i −12j, undergoes a displacement of d =4i. If the particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement? A particle which is experiencing a force given by F [...]
A piece of wood of mass 0.03 kg is dropped from the top of a building 100 m high. At the same time, a bullet of mass 0.02 kg is fired vertically upward with a velocity of 100 m/s from the ground the bullet gets embedded in the wooded piece after striking. find the height to which the combination rises above the building before it starts falling take g=10m/s^2
27
Oct
A piece of wood of mass 0.03 kg is dropped from the top of a building 100 m high. At the same time, a bullet of mass 0.02 kg is fired vertically upward with a velocity of 100 m/s from the ground the bullet gets embedded in the wooded piece after striking. find the height [...]
A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction on block in time t is :
27
Oct
A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction on block in time t is : A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward as [...]