Potential energy and kinetic energy- thermodynamics, Mechanical Engineering

Potential energy (PE)

The energy possessed by body or system by virtue of its position above the datum level. The work done is because of its falling on earth's surface.

Potential energy, PE = Wh = mgh N.m

Where, W = weight of body, N ; m = mass of body, kg h = distance of fall of body, m

g = acceleration because of gravity, = 9.81 m/s2

Kinetic Energy (KE)

The energy possessed by a system by virtue of its motion is called kinetic energy. It means that system having of mass m kg while moving with a velocity V1 m/s, does 1/2mV12 joules of work sooner than coming to rest. So in the state of motion, system is said to have a kinetic energy given as;

K.E. = 1/2mv12

However, when the mass undergoes a change in its velocity from velocity V1 to V2, the change in kinetic energy of system can be expressed as;

K.E. = 1/2mv22 - 1/2mv12

 

Posted Date: 10/15/2012 1:40:26 AM | Location : United States







Related Discussions:- Potential energy and kinetic energy- thermodynamics, Assignment Help, Ask Question on Potential energy and kinetic energy- thermodynamics, Get Answer, Expert's Help, Potential energy and kinetic energy- thermodynamics Discussions

Write discussion on Potential energy and kinetic energy- thermodynamics
Your posts are moderated
Related Questions
temparature stresses in composite bars

a) Draw a diagram of a simple carburettor and briefly explain its function. b) What are the basic characteristics of fuels for CI engines.

Ask qu1. A small maintenance project consists of the following 10 jobs, whose precedence relationships are identified by their node numbers: JOB NODE NUMBERS ESTIMATED DURATION (DA

Classification of system - Thermodynamics: (1) Kitchen refrigerator, (2) Ceiling fan (3) Thermometer in mouth (4) Air compressor (5) Pressure Cooker (6) Carburetor (7) R

Stainless Steel Electrodes A variety of stainless steel electrodes are now being manufactured to produce weld metal similar to composition of most base metals. However, the analy

Occupational Safety Acts The occupational safety Acts are intended to cover every employees (even if single) and all kinds of employers from manufacturing and construction to

mostly what aspects trouble mechanical engineers?

Draw TS and pv diagrams of a dual cycle. Why this cycle is also named limited pressure or mixed cycle ? Derive the mathematical expressions for the efficiency and mean effective pr

Determine the maximum hoop: A conical water tank of height 2 metres & base radius 500 mm is supported at top and is full of water. The thickness of the wall is refer to 24 mm,

Determine an expression for the minimum number of teeth on a pinion which is in mesh with a rack in order to avoid interference and show the minimum number of teeth needed on a pin