I have this problem here.
Let's say: A plumb bob does not hang exactly along a line directed to the center of the Earth's rotation. How much does the plumb bob deviate from a radial line at 40 degrees north latitude if we assume that the earth is spherical?
Related Introductory Physics Homework Help News on Phys.org
In the rotating frame of the earth there are three forces on the bob: the tension in the string (a passive force), gravity (which acts towards the center of the earth), and a centrifugal force that Astronuc described (which acts outward from the earth's axis). If you add up the gravitational force and the centrifugal force, that resultant will tell you how the string must be aligned to support the bob.
We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling We Value Civility
• Positive and compassionate attitudes
• Patience while debating We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving