355480 A particle of mass \(500\,g\) is at rest. It is free to move along a straight line. The power delivered to the particle varies with time according to the following graph :

The momentum of the particle at \(t = 5\,s\) is

355481 A cyclist rides up a hill at a constant velocity. Determine the power developed by the cyclist if the length of the connecting rod of the pedal is, \(r = 25\;cm\), the time of revolution of the rod is \(t=2 s\) and the mean force exerted by his foot on the pedal is \(F = 15\;kg\).

355482 A crane can lift up \(10,000\;kg\) of coal in 1 hour from a mine of \(180\;m\) depth. If the efficiency of the crane is \(80 \%\), its input power must be \({\left( {g = 10\;m{\rm{/}}{s^2}} \right)}\)

355483 Water is falling on the blades of a turbine from a height of \(25\,m\), and \({3 \times 10^{3} {~kg}}\) of water pours on the blade per minute. If whole of the energy is transferred to the turbine, the power delivered is

355480 A particle of mass \(500\,g\) is at rest. It is free to move along a straight line. The power delivered to the particle varies with time according to the following graph :

The momentum of the particle at \(t = 5\,s\) is

355481 A cyclist rides up a hill at a constant velocity. Determine the power developed by the cyclist if the length of the connecting rod of the pedal is, \(r = 25\;cm\), the time of revolution of the rod is \(t=2 s\) and the mean force exerted by his foot on the pedal is \(F = 15\;kg\).

355482 A crane can lift up \(10,000\;kg\) of coal in 1 hour from a mine of \(180\;m\) depth. If the efficiency of the crane is \(80 \%\), its input power must be \({\left( {g = 10\;m{\rm{/}}{s^2}} \right)}\)

355483 Water is falling on the blades of a turbine from a height of \(25\,m\), and \({3 \times 10^{3} {~kg}}\) of water pours on the blade per minute. If whole of the energy is transferred to the turbine, the power delivered is

355480 A particle of mass \(500\,g\) is at rest. It is free to move along a straight line. The power delivered to the particle varies with time according to the following graph :

The momentum of the particle at \(t = 5\,s\) is

355481 A cyclist rides up a hill at a constant velocity. Determine the power developed by the cyclist if the length of the connecting rod of the pedal is, \(r = 25\;cm\), the time of revolution of the rod is \(t=2 s\) and the mean force exerted by his foot on the pedal is \(F = 15\;kg\).

355482 A crane can lift up \(10,000\;kg\) of coal in 1 hour from a mine of \(180\;m\) depth. If the efficiency of the crane is \(80 \%\), its input power must be \({\left( {g = 10\;m{\rm{/}}{s^2}} \right)}\)

355483 Water is falling on the blades of a turbine from a height of \(25\,m\), and \({3 \times 10^{3} {~kg}}\) of water pours on the blade per minute. If whole of the energy is transferred to the turbine, the power delivered is

355480 A particle of mass \(500\,g\) is at rest. It is free to move along a straight line. The power delivered to the particle varies with time according to the following graph :

The momentum of the particle at \(t = 5\,s\) is

355481 A cyclist rides up a hill at a constant velocity. Determine the power developed by the cyclist if the length of the connecting rod of the pedal is, \(r = 25\;cm\), the time of revolution of the rod is \(t=2 s\) and the mean force exerted by his foot on the pedal is \(F = 15\;kg\).

355482 A crane can lift up \(10,000\;kg\) of coal in 1 hour from a mine of \(180\;m\) depth. If the efficiency of the crane is \(80 \%\), its input power must be \({\left( {g = 10\;m{\rm{/}}{s^2}} \right)}\)

355483 Water is falling on the blades of a turbine from a height of \(25\,m\), and \({3 \times 10^{3} {~kg}}\) of water pours on the blade per minute. If whole of the energy is transferred to the turbine, the power delivered is