Advertisements
Advertisements
प्रश्न
उत्तर
Its kinetic energy changes with the change in velocity.
Velocity becomes zero at the highest point.
APPEARS IN
संबंधित प्रश्न
Define 1 J of work.
Name a common device where a gear train is used
In which of the following cases is work being done:
- A boy pushing a heavy rock
- A boy climbing up the stairs
- A coolie standing with a box on his head
- A girl moving on the road.
Define the term energy.
State the SI unit of work.
In case of negative work, the angle between the force and displacement is :
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
- transferred from one place to another
- concentrated
- transformed from one type to another
- destroyed
P, Q and R are three forces which act as shown in fig.
The point O lies in the same plane. Given, P = Q = R = 10N
(i) Which force has the least moment about O? Give a reason.
(ii)Which force has the greatest moment about O? Give a reason.
State the conditions of equilibrium for a rigid body.
A uniform circular motion is an accelerated motion. Justify it.
Explain the difference between a uniform linear motion and a uniform circular motion.
Write an expression for work done by a force depends?
Name the physical quantity whose MKS units are kgm2s-3.
List any six forms of energy and write a short note on each of them.
Fill in the boxe to show the corresponding energy transformation.
Give an example
Light energy changes to electrical energy.
Define force. Is force a scalar or a vector quantity?
