A) Three identical very dense masses of 5000kg each are placedon the x axis. One mass is at x1 = -130cm , one is at theorigin, and one is at x2 = 400 cm.
1) What is the magnitude of the net gravitational force Fgrav onthe mass at the origin due to the other two masses? Take thegravitational constant to be G = 6.67×10−11 N⋅m2/kg2N.Express your answer in newtons to three significant figures.
2) What is the direction of the net gravitational force on themass at the origin due to the other two masses?
B) The space shuttle releases a satellite into a circular orbit545km above the Earth.
1) How fast must the shuttle be moving (relative to Earth) whenthe release occurs?
