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

How does a cat land on its feet, How Does a Cat Land on its Feet? The s...

How Does a Cat Land on its Feet? The saying is in which cats always land on their feet. This animation describes how they do this.

Michelson morley experiment, Michelson Morley Experiment The Michelson...

Michelson Morley Experiment The Michelson-Morley experiment was performed within the year of 1887 through Albert Michelson and Edward Morley at what is presently Case Western

Compute the total heat transfer, A confined quantity of air undergoes two t...

A confined quantity of air undergoes two thermodynamic processes departing from an initial equilibrium state where the temperature is 20°C, the absolute pressure is 1bar, and the v

Determine the frequency heard by the engineer on train, Two trains on separ...

Two trains on separate tracks move toward one another. Train 1has a speed of 140 km/h, train 2 speed of 55.0 km/h. Train 2 blows it shorn, emitting a frequency of 500 Hz. What is t

Does a soccer ball go faster in the air on a cold or hot day, Does a soccer...

Does a soccer ball go faster in the air on a cold or hot day? On a hot day, the air molecules have much kinetic energy - they move more freely. They will move out of the way of

Velocity, Here are the positions at three different times for a bee in flig...

Here are the positions at three different times for a bee in flight (a bee''s top speed is about 7 m/s). time: 5.4 s 5.8 s 6.2 s position: m m Using the best information

Explain current and voltage relationship for two resistors, The current/vol...

The current/voltage relationship for two resistors A and B is as shown in Figure. Verify the value of the resistance of every resistor.

Compute the angle of refraction, Q The refractive index of a medium is √3. ...

Q The refractive index of a medium is √3. Compute the angle of refraction if the un-polarised light is incident on it at the polarizing angle of the medium. μ = tan i p = √3

What is a capacitor, What is a capacitor ? A capacitor is basically a t...

What is a capacitor ? A capacitor is basically a two conductors conencted with an insulator.... It stores great amount of charge!

Thin films, 2. Surface Crystallography and Epitaxy Fe thin films are grown...

2. Surface Crystallography and Epitaxy Fe thin films are grown on a single-crystal Al (100) substrate surface. The films grow with no dislocations (if they are thin enough) which

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