Advertisements
Advertisements
Question
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
Advertisements
Solution
Work is done against the force.
APPEARS IN
RELATED QUESTIONS
If the power of a motor is 100 kW, at what speed can it raise a load of 50,000 N?
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
How is kilowatt hour related to joule?
A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60° with the force, and (iii) normal to the force. (g = 10 N kg-1)
What do you understand by the clockwise and anti clockwise moment of force?
What is a centripetal force?
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person climbs a ladder.
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).
