Work Energy and Power

A body of mass 10 kg is moving on an inclined plane of inclination 30°with an acceleration

A body of mass 10 kg is moving on an inclined plane of inclination 30°with an acceleration 2 ms⁻².The body…

An explosion breaks a rock into three parts in a horizontal plane

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles…

A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion

A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates…

An engine pumps water through a hose pipe. Water passes through the pipe

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of…

A car of mass m starts from rest and accelerates so that the instantaneous

A car of mass m starts from rest and accelerates so that the instantaneous power delivered to the car has…

Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine

Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine. The losses due…

A ball moving with velocity 2 m/s collides head on with another stationary ball

A ball moving with velocity 2 m/s collides head on with another stationary ball of double the mass. If the…

Two spheres A and B of masses m and m respectively collide. A is at rest initially

Two spheres A and B of masses m1 and m2 respectively collide. A is at rest initially and B is…

A mass m moving horizontally (along the x-axis) with velocity v collides and sticks

A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to mass of 3m velocity 2v.…

The upper half of an inclined plane of inclination θ is perfectly smooth while lower

The upper half of an inclined plane of inclination θ is perfectly smooth while lower half is rough. A block…