Thursday

March 5, 2015

March 5, 2015

Posted by **Josh** on Tuesday, November 3, 2009 at 9:18pm.

F=(GmM)/r^2

Here G is the gravitational constant and r is the distance between the bodies.

(a) Find dF/dr

(b) Suppose it is known that Earth attracts an object with a force that decreases at the rate of 2 N/km when r = 30,000 km. How fast does this force change when r = 15,000 km?

- Calc -
**bobpursley**, Tuesday, November 3, 2009 at 9:24pmdF/dr=-2GMm/r^3=-2F/r

b) dF/dr=-2 when r=30,000

but the relationship is inverse, so halving the distance will double the rate.

- Calc -
**Garrett**, Monday, October 10, 2011 at 8:59pm16

**Answer this Question**

**Related Questions**

calculus - newtons law of gravitation says that the magnitude F of the force ...

Calculus - Okay so I have the following question and I am totally stuck: Newton'...

physics - Proponents of astrology claim that the positions of the planets at the...

Science - A hirozontal force F works on a body of mass m1 and accelerates it by ...

Physics, 4 short questions - VERY IMPORTANT FOR AN ESSAY ASSIGNMENT. PLEASE HELP...

Physics - Q.1:When a force is applied to a body,several effects are possible....

Math - The universal law of gravitation determines the amount of force exerted ...

Newton' law of motion - A resultant force of 50N pulls a body of mass 10kg along...

Math2 - The universal law of gravitation determines the amount of force exerted ...

PHYSICS - Two crates , one with mass 4.00 kg and the other with 6.00 kg, sit on ...