Physics · May / June 2020 · Paper 12 · Question 12
A student makes a model toy which balances on the end of a metal rod. [diagram: model toy with weights on a metal rod] Why are the weights needed?
- AThey increase the pressure on the rod.
- BThey increase the weight of the model.
- CThey lower the centre of mass below the top of the rod.
- DThey raise the centre of mass above the top of the rod.
As printed in the paper
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Correct answer: C. They lower the centre of mass below the top of the rod.
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