Kelvi

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

medium
System of Particles and Rotational Motion
2019
physics
1. 

33 J

2. 

3030 kJ

3. 

22 J

4. 

11 J

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