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Recent questions tagged work-energy-theorem

It is well known that a raindrop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop but is otherwise undetermined. Consider a drop of mass 1.00 g falling from a height 1.00 km. It hits the ground with a speed of $50.0 m s^{-1}$.What is the work done by the unknown resistive force?

asked Aug 28, 2014 by sreemathi.v

1 answer

It is well known that a raindrop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop but is otherwise undetermined. Consider a drop of mass 1.00 g falling from a height 1.00 km. It hits the ground with a speed of $50.0 m s^{-1}$.What is the work done by the gravitational force

asked Aug 28, 2014 by sreemathi.v

1 answer

A spherical ball of mass 20kg is stationary at the top of a hill of height 100m.It rolls down a smooth surface to the ground and then climbs up another hill of height 30m and finally rolls down to a horizontal base at a height of 20m above the ground.The velocity attained by the ball is

asked Aug 28, 2014 by sreemathi.v

1 answer

If the unit of force and length each increased by 4 times , then the unit of energy is increased by

asked Jul 18, 2013 by meena.p

1 answer

An object of mass 1 kg travelling at 5.0 m/s enters a region of ice where the coefficient of kinetic friction is .10. Find the distance the object travels before coming to rest.

asked Jul 17, 2013 by meena.p

1 answer

Displacement of a body of mass 2 kg varies with time as $s=t^2+2t$.Where s in meters t in seconds. The work done by the force acting an body during the time t=2s to t=4s is

asked Jul 17, 2013 by meena.p

1 answer

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