Year 12s: what will be the first way you research your future options? >>

centripetal force, interesting question

im trying to figure out how much of an increase in gravity would there be if the earth stopped spinning

in theory we're being thrown out because the earth is spinning, but we stay on earth due to gravity - hence some of the gravity must be used simply to counteract the throwing, this being the centripetal force

im trying to use f = m.r.omega^2

and omega is about 72.7e-6

but thats in newtons and gravity is in newtons per kg.... hmmm

halp D:

Reply 1

teachercol

compare accelerations instead

Reply 2

Chaoslord

teachercol

compare accelerations instead

so its F = ma

F = m.r.omega^2

cancel the m

acceleration due to revolutions is then r.omega^2 so if i add that to 9.8 thats my gravitational force without spin?

its like 9.83 if im right

how boring is that =[ i was hoping it was more xD

Reply 3

teachercol

The earths spin has a rather larger effect on air flow and weather patterns.

Reply 4

Chaoslord

teachercol

The earths spin has a rather larger effect on air flow and weather patterns.

yea true but i wanted to be able to say something like, if the earth stopped spinning we'd be crushed by the force of gravity so lets all spin on the spot and take lover the angular velocity of the earth.... but i guess theres no point no D: