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Pulley

a disc of rad...

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a disc of radius 2m and mass 100kg on a horizontal floor its centre of mass has speed of 20 how much work is need to stop i

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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 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 disc of radius

R

m

is projected on to a horizontal floor with a backward spin such that its centre of mass speed is

v_{o}

and angular velocity is

ω_{o}

. If the minimum value of

ω_{o}

so that the disc eventually returns back is

\frac{x v_{o}}{R}

, find the value of

x

Q. A disc of mass M and radius R has a spring of constant k attached to its centre, the other end of the spring being fixed to a vertical wall. If the disk rolls without slipping on a level floor, how far to the right does the centre of mass move, if initially the spring was unstretched and the angular speed of the disc was

ω_{o}

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