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IGCSE Physics

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Ghost Of Highbury:
its simple, if the gravity of the sun was not acting on the earth, the earth wud have travelled in a straight path, but due to the perpendicular force of the sun acting on it it takes a circular path.

U are already aware of the theory, just apply it here.

@d!_†oX!©:
that makes it a bit more clearer...
but some more examples would be a great help!!!

Ghost Of Highbury:

--- Quote from: @d!_†oX!© on October 31, 2009, 08:55:40 am ---that makes it a bit more clearer...
but some more examples would be a great help!!!

--- End quote ---

 a stone whirling round your head in a circle (tied to the string) - the best example

--> newton's first law says it will continue to move in a straight line unless a force is applied. Here, the force is applied by ur hand pulling in the stone. Thus they are perpendicular, and it travels in a circular path

Strange, as it may seem, the stone is moving at a steady speed but is still accelerating. This is because its direction is changing all the time (= to the tangent at that point)

hope that made it clear.

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