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You are swinging your keys at the end of a lanyard in a horizontal circle around your head. What is in the effect of the

You are swinging your keys at the end of a lanyard in a horizontal circle around your head. What is in the effect of the keys in each case? [2 marks] a) You keep the radius of the circle constant but double the speed. b) The speed of the keys stays the same, but you double the radius.

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