The mass of a hoop of radius 0.30 m is 2kg. It rolls along a horizontal floor so that its centre of mass has a speed of 2 m/s. What is the work done to stop it ?

The mass of a hoop of radius 0.30 m is 2kg. It rolls along a horizonta

1.	The mass of a hoop of radius 0.30 m is 2kg. It rolls along a horizontal floor so that its centre of mass has a speed of 2 m/s. What is the work done to stop it ?
Answer» SOLUTION :Work `=(1//2)mv^(2) + (1//2)IOMEGA^(2)=(1//2)mv^(2) xx (V^(2)//R^(2)) =mv^(2) = 8 J`