Discuss the below:
Q: A uniform spherical planet has mass M= 8.5 E 25 kg and radius R= 7.5 E 6 m.
A hole is drilled from the surface to mass m= 360 kg at an initial position r1= 2.5 E 6 m from the center.
A. Find the initial gravity force F that the planet exerts on mass m.
B. Find the work required to bring mass m to the surface at a constant speed.
C. Find the work required to move mass m at constant speed from initial distance r2= 8.2 E 6 m to distance r3= 9.4 E 6 m, from the center of the planet.
Diagram showing the planet and the mass m at r1, and r2 and r3. Also showing distance r and element dr for finding element of work.
