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ALL CIE PHYSICS DOUBTS HERE !!!

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elemis:
Please post all doubts here.

ruby92:
Can someone please explain in detail how to derive the equation for centerpital acceleration?

elemis:

--- Quote from: ruby92 on October 08, 2010, 09:35:37 am ---Can someone please explain in detail how to derive the equation for centerpital acceleration?

--- End quote ---

http://dev.physicslab.org/Document.aspx?doctype=3&filename=CircularMotion_CentripetalAcceleration.xml

http://www.youtube.com/watch?v=YRBRarbMCyE <-------- watch video first,

ruby92:
thank you:)
I have two more doubts aswell atm.
from circular motion:
At an airshow an aircraft diving at the speed of 170ms-1 pulls out of the dive by moving in the arc of a circle at the bottom of the dive.
a) Calculate the minimum radius of this circle if the centerpital acceleration of the aircraft is not to exceed 5 times the acceleration of freefall.

From gravitaitonal fields:
The radius of the moons orbit is 3.84*10^8, and its period is 27.4 days.Use keplers law to calculate the period of the orbit of a satellite orbiting the earth just above the earths surface.

S.M.A.T:

--- Quote from: ruby92 on October 09, 2010, 11:05:36 am ---from circular motion:
At an airshow an aircraft diving at the speed of 170ms-1 pulls out of the dive by moving in the arc of a circle at the bottom of the dive.
a) Calculate the minimum radius of this circle if the centerpital acceleration of the aircraft is not to exceed 5 times the acceleration of freefall.


--- End quote ---

a=5g ms^-2
a=(v^2)/r
r=(v^2)/a
r=(170^2)/5g
r=(5780/g)m

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