Engineering Slowing down an electromagnetic motor

AI Thread Summary
To slow down an electromagnetic motor, participants suggest several methods, including adjusting the voltage supplied to the motor and using resistors to limit current flow. Some recommend experimenting with gear ratios or adding a mechanical load to reduce speed. Others mention the potential of using PWM (Pulse Width Modulation) to control the motor's speed effectively. Additionally, modifying the winding configuration or using a different type of wire may also help achieve the desired slow speed. Implementing these strategies can help meet the assignment requirements.
heathphysics
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The motor that I've built is the one below its a working motor and spins fast, but for the assignment we have to slow it down to as much as we can. Does anyone have any ideas as to how I can make this motor spin slowly. I've tried using less wire but it doesn't work. Please Help! Note: for the piece of cork, I've used wiring tape instead.
 

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Thread 'Have I solved this structural engineering equation correctly?'

Thread 'Have I solved this structural engineering equation correctly?'

Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
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