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working out



when working out many different types of physics are used to get thing done. when you use a bench press you need to exert a force greater than the one on the bar in order to lift the bar. also when you do dips you need to be able to lift your body weight so that you can lift yourself over the bar same with curl ups. you need to apply a force to the bars to push yourself up.

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Actually to lift the bar you need to exert a force that at least matches the force of gravity on the bar, then you can lift it up at constant velocity (equilibrium).  To accelerate the bar, you need to apply more than the weight of the bar.  Excellent analysis Kgraham30!

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