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potential energy
Potential energy is the energy possessed by an object because of its height above the ground. The amount of potential energy possessed by an object depends on its mass and its height. A roller coaster car is initially hauled by a motor and chain system to the top of a tall hill, giving it a large quantity of potential energy.
 

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It is not uncommon for engineers to accept the reality of phenomena that
are not yet understood, as it is very common for physicists to disbelieve
the reality of phenomena that seem to contradict contemporary beliefs of
physics - H. Bauer


 

 
 
 

Momentum Basics
Author: Tom Young
 Added: 06/02/2003
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Impulse

As you already know a force is something which tends to cause a change in motion.  When Isaac Newton worked with these concepts he understood that it was not just the amount of force which would cause a change in motion, but also the time for which it was applied.

It was reasonable to expect that the longer the force was applied to the object the more change in motion it would invoke.  He called the combination of force and time impulse.

Impulse is easy to calculate.  It is simply the product of force and time.
The unit for impulse is the Ns.  (newton second)

I = F DT

EX.   What is the impulse when you apply q 15 N force to a box for a time of 0.5 s?

I = F DT = 15 N x 0.5 s = 7.5 Ns

Impulse can be calculated for an individual applied force as well as for the total force.


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  Article Comments   Add Comment | View All (1)

Poster: Sunil
Added: -0/6-/2003

It's good for the 10th standard students. i think you can make it more effective by adding some problems and shor questions.
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