Subject :NSO Class : Class 4
Ravi set up an experiment as shown in the given figure.The figure shows five identical balls being suspended on a rod by strings of different lengths. Ravi then cut all five strings at the same time and the balls were
allowed to fall freely to the ground.
Which of these statements holds true for this experiment?
ABall ‘b’ had the greatest impact on the ground.
BBall ‘a’ had less gravitational potential energy than ball ‘c’ at the start.
CBall ‘d’ had the most gravitational potential energy at the start.
DBalls ‘a’ and ‘e’ had different amounts of gravitational potential energy at the start
due to their different positions along the rod.
Ans 1:
Class : Class 7
A
Ans 2:
Class : Class 4
Why not D
Ans 3:
Class : Class 7
A) Ball ‘b’ had the greatest impact on the ground.
Ans 4:
Class : Class 9
The answer is [A]
Ans 5:
Class : Class 5
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