Physics

(i) A boy uses a single fixed pulley to lift a load of 50 kgf to some height. Another boy uses a single movable pulley to lift the same load to the same height. Compare the effort applied by them. Give a reason to support your answer.

(ii) How does uniform circular motion differs from uniform linear motion?

(iii) Name the process used for producing electricity using nuclear energy.

Machines

ICSE 2017

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