Part 1
An engine pump is used to pump a liquid of density ρ continuously through a pipe of area of cross-section A. If the speed of flow of the liquid in the pipe is V, then the rate at which kinetic energy is being imparted to the liquid is:
27
Oct
An engine pump is used to pump a liquid of density ρ continuously through a pipe of area of cross-section A. If the speed of flow of the liquid in the pipe is V, then the rate at which kinetic energy is being imparted to the liquid is: An engine pump is used to pump [...]
A running man has half the KE that a body of half his mass. The man speeds up by 1ms^−1 and then has the kinetic energy as that of the boy. What were the original speeds of the man and the boy?
27
Oct
A running man has half the KE that a body of half his mass. The man speeds up by 1ms^−1 and then has the kinetic energy as that of the boy. What were the original speeds of the man and the boy? A running man has half the KE that a body of half his [...]
Two bodies of masses ‘m’ and ‘4m’ are moving with equal kinetic energy. The ratio of their linear momenta is
27
Oct
Two bodies of masses ‘m’ and ‘4m’ are moving with equal kinetic energy. The ratio of their linear momenta is Two bodies of masses 'm' and '4m' are moving with equal kinetic energy. The ratio of their linear momenta is October 27, 2020 Category: Chapter 6 - Work, Energy and Power , MTG NEET Physics [...]
A running man has the same kinetic energy as that of a boy of half his mass. The man speeds up by 2ms^−1 and the body changes his speed by x m s^−1 so that the kinetic energies of the boy and the man are again equal. Then x in ms^−1 is
27
Oct
A running man has the same kinetic energy as that of a boy of half his mass. The man speeds up by 2ms^−1 and the body changes his speed by x m s^−1 so that the kinetic energies of the boy and the man are again equal. Then x in ms^−1 is A force F=6i+2j-3k [...]
A body of mass 5kg is moving with a momentum of 10kgm/s. A force of 0.2 N acts on it in the direction of motion of the body for 10 sec. The increase in its kinetic energy.
27
Oct
A body of mass 5kg is moving with a momentum of 10kgm/s. A force of 0.2 N acts on it in the direction of motion of the body for 10 sec. The increase in its kinetic energy. A body of mass 5kg is moving with a momentum of 10kgm/s. A force of 0.2 N acts [...]
Force of 4 N is applied on a body of mass 20 kg. The work done in 3rd second is
27
Oct
Force of 4 N is applied on a body of mass 20 kg. The work done in 3rd second is Force of 4 N is applied on a body of mass 20 kg. The work done in 3rd second is October 27, 2020 Category: Chapter 6 - Work, Energy and Power , MTG NEET Physics [...]
A particle of mass 100g is thrown vertically upwards with a speed of 5m/s. The work done by the force of gravity during the time the particle goes up is
27
Oct
A particle of mass 100g is thrown vertically upwards with a speed of 5m/s. The work done by the force of gravity during the time the particle goes up is A particle of mass 100g is thrown vertically upwards with a speed of 5m/s. The work done by the force of gravity during the time [...]
A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 20 kg wt in a direction inclined at 60^∘ to the ground , find the work done by him is
27
Oct
A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 20 kg wt in a direction inclined at 60^∘ to the ground , find the work done by him is A gardener pushes a lawn roller through a distance of 20 m. If he applies a force [...]
A body constrained to move in z direction is subjected to a force given by F→=(2jˆ−15jˆ+6kˆ)N. What is the work done by this force in moving the body a distance of 10 m along z-axis?
27
Oct
A body constrained to move in z direction is subjected to a force given by F→=(2jˆ−15jˆ+6kˆ)N. What is the work done by this force in moving the body a distance of 10 m along z-axis? A body constrained to move in z direction is subjected to a force given by F→=(2jˆ−15jˆ+6kˆ)N. What is the work [...]
A car weighing 500 kg moving against a resistance of 500 N, accelerates from rest to 20 m/s in 10s (g=10m/s^2). The work done by the engine of the car is :
27
Oct
A car weighing 500 kg moving against a resistance of 500 N, accelerates from rest to 20 m/s in 10s (g=10m/s^2). The work done by the engine of the car is : A car weighing 500 kg moving against a resistance of 500 N accelerates from rest to 20 m/s in 10s (g=10m/s^2). The work [...]