Recent content by Alvise_Souta

Yes indeed I overlooked the unequal masses

So it becomes a vector because it doesn't evaluate to 0 since the del operator is used on a scalar function rather than a scalar constant?

The string restricts the blocks to move at the same speed though so wouldn't 1/2 m(vb)^2 - 1/2 m(va)^2 = 0?

Can someone please help me prove this product rule? I'm not accustomed to seeing the del operator used on a dot product. My understanding tells me that a dot product produces a scalar and I'm tempted to evaluate the left hand side as scalar 0 but the rule says it yields a vector. I'm very confused