Rashmi was playing on a swing in a park. To increase her speed when her swing was at its lowest position during its oscillations she pushed the ground hard with her feet. She enjoyed it but could not understand the mechanism. Her elder brother Pankaj explained her the reason, when she asked him.; (i) What type of energy was possessed by Rashmi while swinging? On what factors does it depend?; (ii) Why did the swing’s speed increase on pushing the ground harder with feet?; (iii) Why and what did Rashmi ask Pankaj?
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Answer:potential energy ,becausee to increase speed
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