The San Fernando Valley has a faux backside, you may get admission to it contained in direction of the hollow avocado tree on the top of Riverside; yet a p.c.. of chuds have been given loose down there interior the ninety's, so god in user-friendly terms is universal with of ways a lot of them are down there now. Burbank does not relatively choose to talk approximately it.
Answers & Comments
Verified answer
Question
Calculate the work required to move a planet’s satellite of mass 1820 kg from a circular orbit of radius 2R to?
I just worked the problem below for someone yesterday!!
As the satellite moves away from the planet, its potential energy decreases!
The work required to move the satellite equals the change of the PE!
Potential energy = (-G * M1 * M2) ÷ R
G = 6.67259 * 10^-11 Nm2/kg2
M1 = mass of planet = 6.19 * 10^24 kg.
M2 = mass of satellite = 1410
R = distance between centers of mass of the 2 objects =
2R = 2 * 8.21*10^6 = 1.642 * 10^7 m
3R = 3 * 8.21*10^6 = 2.463 * 10^7 m
PE at 2R = -(6.67259 * 10^-11 * 6.19 * 10^24 * 1410) ÷ (1.642 * 10^7)^2 = -2.208 * 10^3 J
PE at 3R = -(6.67259 * 10^-11 * 6.19 * 10^24 * 1410) ÷ (2.463 * 10^7)^2 = -9.600 * 10^2 J
Work = PE at 3R – PE at 2R = -9.600 * 10^2 – -2.208 * 10^3 = 1.248 * 10^3 J
For earth
Potential energy = (-G * M1 * M2) ÷ R
G = 6.67 * 10^-11 Nm2/kg2
M1 = 5.98 * 10^24 kg
M2 = mass of satellite = 1820 kg
R = 6.38 * 10^6
2R = 1.276 * 10^7 m
Potential energy = (-6.67 * 10^-11 * 5.98 * 10^24 * 1820) ÷ R
Potential energy = -7.26 * 10^17 ÷ R
PE at 2R = -7.26 * 10^17 ÷ 1.276 * 10^7
Work = PE at 3R – PE at 2R
The San Fernando Valley has a faux backside, you may get admission to it contained in direction of the hollow avocado tree on the top of Riverside; yet a p.c.. of chuds have been given loose down there interior the ninety's, so god in user-friendly terms is universal with of ways a lot of them are down there now. Burbank does not relatively choose to talk approximately it.