20. Video
From Mechanics
| Theory | Exercises | Video |
| Discs on a Turn Table | |
| Here four discs are placed on a turntable. The turntable starts to rotate and its angular speed is gradually increased. Explain why the discs begin to slide in the order shown in the clip.
http://www.youtube.com/watch?v=Oa9SD2sqgXQ
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| Discs of Different Masses on the Turn Table | |
| If two discs of different masses are placed at the same distance from the centre of the turntable, why if either will begin to slide first? Make your prediction before watching the clip.
http://www.youtube.com/watch?v=S9I2uaHKgD4
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| Discs of Different Masses on the Turn Table | |
| Here the coefficient of friction between a block and a plane is determined and then tested by using the angle of friction.
http://www.youtube.com/watch?v=z2q_Wymu0W4
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