Advertisements
Advertisements
Question
For the following scenarios, state whether the work done by gravity is positive, negative, or zero.
A person walks on a levelled road.
Solution
Zero work is done.
APPEARS IN
RELATED QUESTIONS
A satellite revolves around the earth in a circular orbit. What is the work done by the force of gravity? Give reason.
Name the quality which is measured in kWh.
kWh is the unit of ______.
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
Relate 1 KWh (kilowatt hour) with joule.
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
State the C.G.S. unit of work. How it is related to its S.I. unit?
For the following scenarios, state whether the work done by gravity is positive, negative, or zero.
A person climbs a ladder.
