If two bowling balls were placed near each other in outer space, far from any pl
ID: 1468106 • Letter: I
Question
If two bowling balls were placed near each other in outer space, far from any planet or star and with no initial velocity with respect to each other, they would
maintain a constant separation.
slowly start moving together.
slowly start moving apart.
QUESTION 2
A satellite of mass m a distance R above the centre of the earth (mass M), has a gravitational potential energy given by U=G//MmL R This expression requires that the zero of potential energy of the satellite be taken at
the centre of the Earth
the surface of the Earth
half way between the Earth and the satellite
at an infinite distance from the Earth.
If two bowling balls were placed near each other in outer space, far from any planet or star and with no initial velocity with respect to each other, they would
a.maintain a constant separation.
b.slowly start moving together.
c.slowly start moving apart.
Explanation / Answer
Question 1.
If two bowling balls were placed near each other in outer space, far from any planet or star and with no initial velocity with respect to each other, they would slowly start moving together.
Question 2.
This expression requires that the zero of potential energy of the satellite be taken at the centre of the Earth