haruspex's latest activity
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haruspex replied to the thread Block drifts off between two moving planes through friction.It might be simpler to work in scalars. If the components of ##\vec v## at some instant are ##v_1, v_2##, can you write expressions for... -
haruspex replied to the thread Question About homework on Coulomb's Law.The wording is very strange. What is the relevance of the charge being "instantly" negated, or of the system being "released". From...
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haruspex replied to the thread Equilibrium Position of a Hanging Candy Cane.Doh. I had written ##\tan(y)=B/A## but mistranscribed it, then only half adjusted what followed.
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haruspex replied to the thread Equilibrium Position of a Hanging Candy Cane.Yes. In the more tricky case of ##A\sin(x)+B\cos(x)=C##, set ##\tan(y)=A/B##, producing...
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haruspex replied to the thread Equilibrium Position of a Hanging Candy Cane.It is always possible that the given answer is wrong, but you do not say what answer you are getting, so we cannot tell. Wrt solving...
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haruspex replied to the thread Writing a vector parallel and normal to a unit vector ##\hat n##.Generalising somewhat, suppose in an n-dimensional vector space we wish to represent the vector ##\vec v## as a linear combination of...