Advertisements
Advertisements
Question
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Advertisements
Solution
The work done against gravity is zero when a body is moved horizontally along a frictionless surface because the force of gravity is perpendicular to the displacement in this case.
APPEARS IN
RELATED QUESTIONS
Express joule in terms of erg.
State the law of conservation of energy.
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m s−2, the work by her after climbing 2 m will be :
On what factors does the work done by a force depend?
Fill in the boxe to show the corresponding energy transformation.
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
________ is said to be done when a force is acting on it.
