work is being done when a force:
a) is exerted while pulling a wagon up a hill
b) acts vertically on a cart that can only move horizontally
c) is exerted by one team in a tug-of-war when there is no movement
d) of gravitational attraction acts on a person standing on the surface of the Earth
4 answers
work = force*distance * cosine of the angle between force and distance.
tell me
TELL ME
c) is exerted while pulling a wagon up a hill
explanation: If object is not displaced, no work is done. An applied force has to result in the movement of some object over a distance.
explanation: If object is not displaced, no work is done. An applied force has to result in the movement of some object over a distance.
0 answers