Question Answers
Sahay Sir > Question Answers
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 [...]
A force acts on a 2 kg object so that its position is given as a function of time as x=3t^2+5. What is the work done by this force in first 5 seconds ?
27
Oct
A force acts on a 2 kg object so that its position is given as a function of time as x=3t^2+5. What is the work done by this force in first 5 seconds ? A force acts on a 2 kg object so that its position is given as a function of time as x=3t^2+5. [...]
Three blocks A, B and C are lying on a smooth horizontal surface, as shown in the figure. A and B have equal masses, m while C has mass M. Block A is given an initial speed v towards B due to which it collides with B perfectly inelastically. The combined mass collides with C, also perfectly inelastically 5/6th of the initial kinetic energy is lost in whole process. What is value of M/M?
27
Oct
Three blocks A, B and C are lying on a smooth horizontal surface, as shown in the figure. A and B have equal masses, m while C has mass M. Block A is given an initial speed v towards B due to which it collides with B perfectly inelastically. The combined mass collides with C, [...]
Posted in:
Chapter 4 - Work, Energy and Power
,
JEE Mains Physics 2002-2019 Solved Video Solutions
,
Tags:
also perfectly inelastically 5/6th of the initial kinetic energy is lost in whole process. What is value of M/M? ,
as shown in the figure. A and B have equal masses ,
B and C are lying on a smooth horizontal surface ,
m while C has mass M. Block A is given an initial speed v towards B due to which it collides with B perfectly inelastically. The combined mass collides with C ,
Three blocks A ,
A man mass = 50 kg and his son mass =20 kg are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms^–1 with respect to the man. The speed of the man with respect to the surface is :
27
Oct
A man mass = 50 kg and his son mass =20 kg are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms^–1 with respect to the man. The speed of the man with respect to the surface is : A [...]
In young’s double slit experiment the intensity of light when slit is at distance λ from central is l. What will be the intensity at the distance of silt is λ/6 ?
27
Oct
In young’s double slit experiment the intensity of light when slit is at distance λ from central is l. What will be the intensity at the distance of silt is λ/6 ? In young's double slit experiment the intensity of light when slit is at distance λ from central is l. What will be the [...]