OK so I figured that displacement x(t) = A cos (wt)
You know A = .1 m
Solving for w, you can find max speed from vmax = -Aw
But in the equation displacement x(t) = A cos (wt), what are the values for t and x?
My book says that the velocity for a simple harmonic motion is the derivative of the x(t) = Acos(\omega t + \phi)
Also, I still don't know where to start as such
Homework Statement
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A 1 kg object is connected to a horizontal massless spring. The spring is initially stretched by 0.1m and the object is released from rest there. It proceeds to move without friction. The next time the speed of the object is 0 is 0.5s later.
Determine the maximum speed...
I'm torn between C and D, can anyone explain which answer is which and WHY?
Also, I don't know whether the answer to this is "in" or "out", however I'm quite sure it's out. Does the direction of a magnetic field have to be North to South?
Hey, I'm in first year engineering (mechanical), but we study EE as well. I've got exams coming up in about 2 weeks, and I need a good intro text to help me study since the lecture notes I have aren't really adequete.
The kind of stuff I'm covering include circuit theory (thevenin problems...
I'm having trouble understanding how to calculate the work in... :(
Also it says calculate the "rate", so how would the answer be expressed? J/s?
Edit: I've never posted this anywhere before.
Homework Statement
(i)Water flows over a dam at the rate 580kg/s and falls vertically 88m before striking the turbine blades. Calculate the speed of the water just before striking the turbine blades (SOLVED) and (ii) the rate at which mechanical energy is transferred to the turbine blades...