Define mechanical energy, Physics

Assignment Help:

Mechanical energy E of particle, system or object is explained as the sum of kinetic energy K and potential energy U, i.e. E = K + U. It is a scalar quantity having dimensions [ML2T-2] and SI unit joule.

(i)  It relays on frame of reference.

(ii) A body may have mechanical energy without having either kinetic energy or potential energy. Though, if both potential and kinetic energies are zero, mechanical energy will be zero. The result may or may not be true, i.e., if E = 0 either both KE and PE are zero or PE negative and KE positive such that KE + PE = 0

 


Related Discussions:- Define mechanical energy

What is a temperature scales, What is a Temperature Scales? Fahrenheit,...

What is a Temperature Scales? Fahrenheit, Celsius and Kelvin were scientists who studied how heat and temperature work. The most familiar scale to Americans (until the time tha

Draw a free-body diagram of the sculpture, A large sculpture is lowered int...

A large sculpture is lowered into place by a crane. The sculpture has a mass of 2225 kg. When the sculpture makes contact with the ground, the crane slowly releases the tension in

Sound waves and the eardrum, Sound Waves and the Eardrum While a pressu...

Sound Waves and the Eardrum While a pressure wave reaches the ear and a series of high and low pressure regions impinge upon the eardrum. An arrival of a compression or high pr

Resonance, give applications of resonance

give applications of resonance

Define the principle and working of an a.c. generator., Define, with the he...

Define, with the help of diagram, the principle and working of an a.c. Generator. Write the expression for the e.m.f. generated in the coil in terms of its speed of rotation

Explain battery powered vehicles, Battery powered vehicles Used DC seri...

Battery powered vehicles Used DC series motors are the first choice. Recently AC motors with frequency changers are being considered.

Avogadro constant, Avogadro constant; L; NA (Count A. Avogadro; 1811) T...

Avogadro constant; L; NA (Count A. Avogadro; 1811) The number of items in a sample substance is equivalent to the number of atoms or molecules in a sample of ideal gas that is

Bronze, Bronze: Copper when alloyed with tin (8% to 16%) and a very small ...

Bronze: Copper when alloyed with tin (8% to 16%) and a very small percentage of a third element like cadmium, beryllium, phosphorous, silicon etc, is called Bronze. Bronzes are gi

Electrons and holes in semi-counductor, Electrons and holes in semi-counduc...

Electrons and holes in semi-counductor Metals have free electrons available in conduction band for conduction of electric current. As the valence band overlaps the conduction b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd