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-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@www.phys-l.org] On Behalf Of John
Mallinckrodt
Sent: Thursday, December 11, 2014 4:16 PM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] apparent weight
The centripetal acceleration of a person at the equator due only to the
Earth's rotation is about 3.4 cm/s^2 while the acceleration of the Earth in its
orbit about the Sun is about 0.6 cm/s^2. So the "classical acceleration" that
you refer to of the person in the cartoon picture is ~2.8 cm/s^2 AWAY from
the Sun at noon and 4.0 cm/s^2 TOWARD the Sun at midnight. None of that,
of course, bears on the question of differences in weight due to tidal effects.