Chapter 6 – Work, Energy and Power
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 [...]
A particle of mass 0.5kg travels in a straight line with velocity v=kx^3/2 where a=5m^−1/2 s^−1. What is the work done by the net force during its displacement from x=0 to x=2m?
27
Oct
A particle of mass 0.5kg travels in a straight line with velocity v=kx^3/2 where a=5m^−1/2 s^−1. What is the work done by the net force during its displacement from x=0 to x=2m? A particle of mass 0.5kg travels in a straight line with velocity v=kx^3/2 where a=5m^−1/2 s^−1. What is the work done by the [...]
A force F=6i+2j-3k acts on a particle and produces a displacement of s=2i-3j-xk . if the work done is zero the value of x is
27
Oct
A force F=6i+2j-3k acts on a particle and produces a displacement of s=2i-3j-xk . if the work done is zero the value of x is A force F=6i+2j-3k acts on a particle and produces a displacement of s=2i-3j-xk . if the work done is zero the value of x is October 27, 2020 Category: Chapter [...]
A man drags a block through 10 m on rough surface (μ=0.5). A Force of 3 kN acting at 30^o to the horizontal. The work done by the applied force is:
27
Oct
A man drags a block through 10 m on rough surface (μ=0.5). A Force of 3 kN acting at 30^o to the horizontal. The work done by the applied force is: A man drags a block through 10 m on rough surface (μ=0.5). A Force of 3 kN acting at 30^o to the horizontal. The [...]