IAmSparticus
Nov4-09, 11:03 PM
1. The earth spins on its axis once a day and orbits the sun once a year (365.24 days). Take the positive direction for the angular displacement to be the direction of the earth's motion. Express your answers in radians/second.
2. Wavg = Delta Theta / Delta Time
Delta Theta is in radians
3. Since the Earth rotates once during a day, the delta theta equals 2 Pi radians.
Time = 60 seconds (in a minute) * 60 minutes (in an hour) * 24 hours (in a day) = 84600 seconds.
2 Pi radians / 84600 seconds = 7.27 * 10^-5 rads/sec
Appartenly this is wrong accoring to the homework program WebAssign. What is wrong with my work?
Also, I got 1.99 * 10^-7 rad/sec for the angular velocity of the earth around the sun, which is apparently also wrong.
Help?
2. Wavg = Delta Theta / Delta Time
Delta Theta is in radians
3. Since the Earth rotates once during a day, the delta theta equals 2 Pi radians.
Time = 60 seconds (in a minute) * 60 minutes (in an hour) * 24 hours (in a day) = 84600 seconds.
2 Pi radians / 84600 seconds = 7.27 * 10^-5 rads/sec
Appartenly this is wrong accoring to the homework program WebAssign. What is wrong with my work?
Also, I got 1.99 * 10^-7 rad/sec for the angular velocity of the earth around the sun, which is apparently also wrong.
Help?