What is the approximate gravitational potential energy of the two-particle system, of masses and separated by a distance of
Assumptions and details
Consider an -plane in deep space, where two particles A and B are located. Particle A is fixed at the origin and particle B is apart from particle A with a distance of The masses of particles A and B are and respectively. If particle B is released from rest, what is the kinetic energy of B when it has moved toward A?
Assumptions and Details
The mean diameter of Mars is and its mass is What is the approximate escape speed on Mars?
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Four identical particles are forming a square with side length as shown in the above figure. Then the side length of the square is reduced to If the mass of each particles is approximately how much gravitational potential energy of the four-particle system is reduced, assuming that the four particles are point particles?
Assumptions and Details
If a space rocket is launched vertically from the surface of the Earth with initial energy what will be the kinetic energy of the space rocket when it is from the center of the Earth, assuming that the mass and the radius of the Earth are and respectively?
Assumptions and Details
The universal gravitational constant is