1.
STATEMENT-1: If a porter carries a luggage of from the waiting room of a railway station to the platform and bring it back to the waiting room the work done by him is zero.
STATEMENT-2: Work done is defined as the scalar product of force applied and the displacement vector which in this case is zero.
STATEMENT-2: Work done is defined as the scalar product of force applied and the displacement vector which in this case is zero.
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