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Q1. If you have a bar 48cm long and pinned (an axis) at one end, and you have to exert a force of 9.7N upward in the middle to keep it in equilibrium, what is the essential mass hanging on the far end (assume the bar itself is weightless)? Include units (1 pt).

Q2. If it takes 3 golf balls to equal the mass of one tennis ball, what weight of tennis balls do you require equalling the number of golf balls in one kilogram of golf balls?

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