Reading:

• Chapter 1 (yes, it's short, but note the advantages as well as the limitations of using geophysical methods)
• Chapter 6 up until the end of section 6.3.3.

1. Consider a gravity survey that is to begin at a base station whose latitude is 42^o 37' 27''N; the radius of Earth at this location is 6,368.38km. What is gravity on the geoid (not at this elevation) at this latitude? Express your final answer twice, once in units of cm/s² as well as in mgal.
2. By how much would your answer change if you were to move 565.0m to the south of where you are located. (We will go over this the first thing on Monday.
3. Your company wants you to do a gravity survey with a gravimeter that can measure down to 0.03mgal. What is the maximum distance in meters north (or south) for a gravity survey line that would not require you to do a latitude drift correction for your data?
4. Find the theoretical difference in gravity 'dg' from the first floor of Reed Hall to the third floor. The floors are 4.0m high. Earth's mass is 5.976x10²⁴kg. Assume Earth's radius at sea level here is 6,370.38km, and that the first floor of Reed is 558.0m above sea level.