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Gravitation — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceGravitation3 Marks
Question
A student thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with his hypothesis or not? Comment.
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Answer

Yes, because force depends on the quantity of matter contained in a body or a particle and we know force can change the speed of a moving object so indirectly force depends on distance as it depends on speed too or due to gravitational force. When two bricks are tied together their weight would be greater than a single brick because gravitation due to acceleration depends on weight $\Rightarrow w = m.g \Rightarrow g =$ w.g and greater weight will fall faster.

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