A porter walks along a level road carrying a suitcase on his head at constant speed
PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy
Problem
A porter walks 50m along a level road carrying a suitcase on his head at constant speed. What is the work done by the gravitational force on the suitcase during this walk?
(a) +mg×50J
(b) Cannot be determined as m is not given
(c) 0
(d) −mg×50J