Freefall Physics
Centripetal Acceleration Puzzler Note: remember that the circumference of a circle is 2πR1. Consider yourself standing on the Earth’s equator. REarth = 6.4 x 106 m. Let the period of the Earth’s rotation be T.A) How fast (speed v) are you be traveling due solely to the Earth’s Rotation? (Do a small sketch.)Alg first!B) Find your centripetal acceleration due to the Earth’s Rotation. Alg first!2. Now consider yourself on the Earth revolving around the Sun. rorbit = 1.5 x 1011 m. Let the period of the Earth’s orbit be T.A) How fast (speed v) would you be traveling due solely to the Earth’s orbital motion? Do a small sketch. Alg first!B) Find your centripetal acceleration due to the Earth’s orbital motion. Alg first!3. Why is it OK to treat the Earth as an inertial reference frame, where Newton’s Laws will hold? Why don’t we feel the acceleration on Earth due to its axial rotation and/or orbital motion around the Sun? ................
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