The Ptolemaic model of the universe describes the Earth as being at the center, stationary, with the Sun, the Moon, other planets, stars, and EVERYTHING rotating around it. <em>(B) </em>
Hello!!
For calculate the work let's applicate the formula:
W = Work = ?
F = Force = 1525 N
d = Distance = 381 m
⇒ 
W = 1525 N * 381 m
⇒ 
W = 581025 J
It depends who is watching it.
-- A passenger on the train says that his clock is normal, but the clock at the station he just passed is running slow.
-- A ticket agent at the station says that his clock is normal, but the clock on the train that just rolled through is running slow.
-- They're both correct, but ...
-- The difference is too small for either of them to notice, unless the train is going faster than about half the speed of light.
-- It isn't.
The amount of work done on the weights would be approximately 15.0 Kg of work
