Centre of mass


1.  Another name for Centre of mass.

2.  What do you mean by centre of mass?

3.  Whichever point a card is suspended from by a pin, it will always hang with its centre of mass vertically under the pin. Is this true? Why?

4.  Which are the three states of equilibrium? Explain with examples.

5.  What is the condition necessary for stability?

6.  Why is a box with a wider base  and /or a lower centre of mass more stable?

7.  How does a tightrope walker stay balanced? When will he topple over?




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