Physics
A child starts eating an ice cream from a fully-filled cone. What happens to its centre of gravity?
- rises continuously
- falls continuously
- remains constant
- none of the above
Force
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Answer
falls continuously
Reason — When the cone is fully filled with ice cream, most of the mass is towards the upper part of the cone, so the centre of gravity is relatively high. As the child starts eating the ice cream from the top, the upper mass gradually decreases, leaving more of the remaining mass lower in the cone.
Because the heavier portion shifts downward, the centre of gravity of the cone–ice cream system continuously falls as the child eats it.
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