Describe escape velocity, Physics

Assignment Help:

Q. Escape Velocity

An object will conquer the force of gravity when its kinetic energy in the direction away from earth exceeds its potential energy. We find the smallest kinetic energy required by solving K.E. = P.E..

Then

mv2/2=mgr,

Where m is the mass of object and v is its velocity and g is the acceleration due to gravity and r is the radius of the earth.

Solving for v

v2= 2gr

v =√2gr

Taking the earth's radius as 3960 miles as well as the acceleration due to gravity as 32 feet per second2 we have

V=√232/5280 × 3960

Which reduces to 6.9 miles per second


Related Discussions:- Describe escape velocity

Explain resistance, Explain Resistance Resistance:   Interaction among...

Explain Resistance Resistance:   Interaction among flowing charges and atoms in electric circuit which resists (slows) current flow SI units:  volt per ampere ≡ ohm (Ω)

Magnetism, Magnetism: Everyone has seen and handled a magnet in the f...

Magnetism: Everyone has seen and handled a magnet in the form of a straight or horseshoe-shaped bar of steel or steel-alloy. The magnet was originally a piece of steel befor

Situation of the converging lens - principle ray 1, Q. Situation of the con...

Q. Situation of the converging lens - Principle Ray 1? Principle Ray I . The easy one just as in the case of the converging lens this ray goes straight through the centre of t

Why satellite is thrown horizontally in space?, A satellite is goes form th...

A satellite is goes form the surface of earth vertically and then is turned horixontally in space as it requires to revolve around the earth.

Mass as a measure of the amount of inertia, Mass as a Measure of the Amount...

Mass as a Measure of the Amount of Inertia: All objects resist alters in their state of motion because they have inertia. However some objects have more of a tendency to resist

Inkjet printer, definition, Working principal, applications ??

definition, Working principal, applications ??

Illustrate what are the weights in pounds of liquid gallons, Q. Illustrate ...

Q. Illustrate what are the weights in pounds of liquid gallons? Answer:- First you should know the specific gravity of the liquid then you can compute the weight by multip

A, what is electron

what is electron

Polarisation of light, Light propagates as transverse EM rays. The magnitud...

Light propagates as transverse EM rays. The magnitude of electric field is much larger as compared to magnitude of magnetic field. We generally prefer to define light as electric f

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