Exam 10: Gravity Is More Than Keplers Laws

If the Moon were twice as far away from Earth as it is now,the strength of its tidal forces would be

A planet could not form in the asteroid belt because at this radius there is an orbital resonance with the Sun and Saturn.

Consider a person of mass m trapped inside a hollow sphere of mass M and radius R.What is the force of gravity on the person if he/she stands at a radius of 0.5 R?

If we characterize a chaotic system as being "deterministic but unpredictable," what do we mean?

As Earth's rotation slows over time,Earth loses angular momentum.What happens to it?

Because the Earth rotates in the same direction as the Moon orbits it,the added gravitational pull of Earth's tidal bulge causes the Moon's orbital speed to increase over time.The opposite happens for Neptune's moon Triton,which orbits in a direction opposite to Neptune's rotation.Because of its change in orbital speed,what will happen to Triton's orbital distance over time?

Because of conservation of angular momentum,as the Earth's rotation slows in response to the Moon's tidal pull,the Moon's distance from Earth increases.

How does the tidal stress on the Earth's oceans due to the Moon vary with latitude on the Earth? Consider four points on the Earth: (1)on the equator on the side closest the Moon, (2)on the equator on the side farthest from the Moon, (3)at the North Pole,and (4)at the South Pole.Draw a diagram and show the direction of the tidal stress at each point.

Ocean beach tides are higher than land tides because