Recent content by georgedaisuki

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    Solving Inductor 12 Henry Discharge: R Calculations

    Homework Statement Inductor 12 Henry, energy supply is Emf knot. At t=0, the switch is opened which leads to rapid discharge along a resistor. The flash from the discharge lasted 50 ms. What is the resistance of the resistor? Homework Equations I know to use i=Ie^(-R/L) t but what...
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    Finding the Magnetic Field of two slabs.

    Homework Statement There are two slabs on one another. The top slab has current coming out of the page and the bottom slab has current going into the page. y=0 is located between the two slabs. the current density of the top slab is J and the current density of the bottom slab is -J...
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    Finding how high a winch can lift a mass before the battery discharges

    so in the next problem, we have to assume that the 50% doesn't apply. I now have to find the Rl which would maximize the energy. .. This is where I would apply the total energy-energy due to winch correct? My question here is that how do I find energy loss due to the winch? Can i use...
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    Finding how high a winch can lift a mass before the battery discharges

    also, P is VI but don't I need to take into account the resistance of the winch it's self? Or does the 50% efficiency take into account of the resistance?
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    Finding how high a winch can lift a mass before the battery discharges

    O I see. That should help me quite a bit. Thank You
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    Finding how high a winch can lift a mass before the battery discharges

    Finding how high a "winch" can lift a mass before the battery discharges Homework Statement The EMF of the D cell battery is 1.5 V and the life is about 10 A/hr. 50% of the energy int he winch does actual work and the lifting mass is 50 kg. The winch has a load resistance variable of Rl...
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