How much force I have to apply to throw a stone out of orbit?

[venu madhavan]

I know escape velocity. in order to get out of Earth's orbit the object has to maintain 11.2 km/s speed.

But If I want to throw a 1kg stone out of orbit... how much force I have to apply?

 

[russ_watters]

Any force above 10N can eventually get it to escape if you apply it for long enough...do you have any more specifics of the scenario you are interested in?

 

[venu madhavan]

Thank you very much for reply. please tell me this also. how long I have to apply that force... consider a scenario hat I have a stone in my hand.. then How much for I have to apply ? Its Like one time force. I won't apply for long time like rocket...does any object has to maintain its 11.2km/s speed until it gets out of orbit?

 

[venu madhavan]

I got the answer thank you

 

[russ_watters]

If you applied that force for about 13 hours, you'd reach escape velocity.

So I'm really not sure what you are after, but if you use a=f/m and s=at you can calculate how much speed you'll gain for a certain force over a certain time. Obviously, if you want to apply the force for a short one, you'll need a very large force (like if you want to use a cannon).

 

[venu madhavan]

How much Force please tell me... how much is that very large force? consider of it is a canon tell me please

 

[jbriggs444]

Escape energy for a given mass is given by $e = \frac{mv^2}{2}$ where m is the mass and v is escape velocity.

Energy imparted by a throw from your hand is given by $e = Fd$ where d is the distance covered by your hand during the throw and F is the force that you apply throughout the throw.

You know m and v. You can estimate d. Solve for F.

 

[russ_watters]

How much Force please tell me... how much is that very large force? consider of it is a canon tell me please

We can't just tell you. It depends on the specifics of the scenario you are interested in, which you haven't told us!