Hi,
I'm struggling to understand why we never consider normals when doing torque questions?
One on the top of my head is a hand pushing a bar, 'x' metres away' from the pivot joint. From the worked examples, there is only one torque (the hand), but how come we never consider the normal forces involved? It gets more confusing when I think about applying torque to people on planks, how come when some people are standing we never take into account their normals when applying torque?
I'm struggling to understand why we never consider normals when doing torque questions?
One on the top of my head is a hand pushing a bar, 'x' metres away' from the pivot joint. From the worked examples, there is only one torque (the hand), but how come we never consider the normal forces involved? It gets more confusing when I think about applying torque to people on planks, how come when some people are standing we never take into account their normals when applying torque?
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