Assertion (A): When a person walks forward on a level road while steadily carrying a…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Assertion (A): When a person walks forward on a level road while steadily carrying a suitcase, he does no mechanical work on the suitcase.
Reason (R): The force exerted by the person on the suitcase is vertical whereas the displacement of the suitcase is horizontal.
(a) Both A and R are true, but R is not the correct explanation of A
(b) A is false, but R is true
(c) Both A and R are true, and R is the correct explanation of A
(d) A is true, but R is false