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A) Three identical very dense masses of 5000kg each are placed on the x axis. One...

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Physics

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?

+x direction
-x direction

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?

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