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work power and energy 
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myEngg Colonel General
myEngg Colonel General

Posts: 223
Post work power and energy
1. A rod of mass m and length l is kept on a smooth wedge of mass M as shown in the figure . If the system is released when the rod is at the top of the wedge , find the speed of the wedge when the rod hits the ground level.{Neglect fricn b/w all surfaces in contact.}
[image]60308819.jpg[/image]


2.2.A particle of mass m moves along a circle of radius R with a normal acc. varying with time as a(n) = at[p]2[/p] , where 'a' is a const. Find the time dependence of the power developed by all the forces acting on the particle..


Sat Sep 18, 2010 4:56 pm
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Post Re: work power and energy
energy is central to physics, as many times the analysis of a system's motion involves understanding how energy is changing. The change in energy is known as work, and the work done over a given period of time is known as power.Work is the application of a force over a distance. Lifting a weight from the ground and putting it on a shelf is a good example of work. The energy of a moving object is called kinetic energy.power is a measure of how quickly work can be done.


Sat Mar 12, 2011 10:13 am
myEngg Sergeant
myEngg Sergeant

Posts: 8
Post Re: work power and energy

Hey Bro..

What he had asked and what u have replied..


Mon Mar 14, 2011 11:02 am
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