Advertisements
Advertisements
प्रश्न
When you move upstairs, do you perform some work?
Advertisements
उत्तर
Yes, we perform work against gravity.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
State the energy transformation on the following:
Electricity is obtained from solar energy.
What is meant by a translational motion? Give one example.
What do you mean by a kilo joule?
A weight lifted a load of 200 kgf to a height of 2.5 m in 5 s. calculate: (i) the work done, and (ii) the power developed by him. Take g= 10 N kg-1.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
