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Kepler's Law

a disc of rad...

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a disc of radius 2 m and mass 100 kg rolls on a horizontal floor.its centre of mass has speed of 20m/s.how much work is needed to stop it

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Q. A disc of radius

2 m

100 k g

rolls on a horizontal floor. Its centre of mass has a speed of

20 c m / s

. How much work is needed to stop it ?

Q. A hoop of radius 2 m weighs 100 kg. It rolls along a horizontal floor so that its centre of mass has a speed of 20 cm/s. How much work has to be done to stop it?

Q. A solid sphere of mass

5 k g

rolls on a horizontal surface without slipping. If speed of its centre of mass is

4 m s^{- 1}

, its kinetic energy is:

Q. A force of 100 N is applied to the centre of a circular disc, of mass 10 kg and radius 1 m, resting on a floor as shown in the figure. If the disc rolls without slipping on the floor, the linear acceleration

i n \frac{m}{s^{2}}

of the centre of the disc is (correct to two decimal places).

Q. A circular disc of mass

2 k g

10 c m

rolls without slipping with a speed

2 m / s

. The total kinetic energy of disc is

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