Advertisements
Advertisements
Question
A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force. Calculate the work done by the force.
Advertisements
Solution
F = 30 N
d= 5m
Work done = w = F × d
W = 30 × 5= 150 J
APPEARS IN
RELATED QUESTIONS
Name a common device where a gear train is used
Express joule in terms of erg.
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)
Choose one or more correct alternatives.
Joule is the unit of ______.
- force
- work
- power
- energy
Complete the following sentences:
The SI unit of work is ....... and of power is .......
If an electric bulb of 100 watt is lighted for 2 hours, how much electric energy would be consumed?
Name the CGS unit of work.
Is power a scalar or a vector quantity?
