Standard Science Primary 6 Interactions

Two balls, A and B, are dropped from the same height. Ball A has twice the mass of Ball B. Which of the following is true about the gravitational force acting on the balls?

A The gravitational force on Ball A is twice that on Ball B.
B The gravitational force on both balls is the same.
C The gravitational force on Ball B is twice that on Ball A.
D There is no gravitational force acting on the balls while they fall.
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Worked Solution

Step 1: Gravitational force (weight) = Mass x Gravity. Step [2-9]: Since Ball A has more mass, the Earth pulls it with a stronger force. Step [2-9]: Force is proportional to mass.

Correct answer: The gravitational force on Ball A is twice that on Ball B.

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