Recent content by Hamish Cruickshank

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    What is the role of centripetal force in vertical circular motion?

    I am having some difficulty in understanding vertical circular motion. As I understand it, the only time the object (lets say an aeroplane flying in a vertical circle) is in uniform circular motion is at the top and the bottom of the circular path. So if you want to find the net force on...
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    Does a planets orbit ever go chaotic?

    Cool thanks I'll check it out
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    Does a planets orbit ever go chaotic?

    Okay, I am doing grade 12 physics in australia and I was wondering about systems of planets interacting with each others gravity and whether this could cause chaos with orbits. If all the other planets in out solar system effect one another, does there ever end up a point where the clockwork...
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    Probability problem - finding standard deviation and mean in a normal dist.

    Its okay, I got it figured out. I took the z scores for those percentages as if they were standard normal distributions and then substituted them into the formula z = (x - mu)/sigma. I then had simultaneous equations which were quite easy to solve. I thought i'd answer my own question for...
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    Probability problem - finding standard deviation and mean in a normal dist.

    Hey all. Im doing maths methods 5 (i live in Australia) and I've run into this problem. A university study investigated the increase in heart rates(measured in beats per minute) of people undertaking a particular exercise. The increases in heart rate were normally distributed with...
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