GCSE Questions: Moments and Centre of Gravity
Q5.
(a) The diagram shows a lampshade hanging from the ceiling.
Draw an X on the diagram so that the centre of the X marks the centre of the mass of the lampshade.
(1 mark)
(b) Complete the sentence: A suspended object will come to rest with its centre of mass directly _ _ _ _ _ _ _ _the point of suspension.
(1 mark)
(c) Arrange the sentences below into the correct order to describe how the student can find the centre of mass of a thin sheet of irregularly shaped card.
The sequence starts with sentence D and finishes with sentence E.
| A |
A line is drawn on the card marking the position of the string. |
| B |
The pin is put through one of the holes in the card and held in the boss. |
| C |
This is repeated using the other hole. |
| D |
Two holes are made in the card with each hole near to the edge of the card. |
| E |
The centre of mass is where the lines cross on the card. |
| F |
The weight is tied to the string and then the string is hung from the pin. |
(3 marks)
(Total 5 marks)
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