HSC Physics Predictions / Thoughts (1 Viewer)

Time&moretime

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me too - and I used T=niAB as a model and because it said model(s) I used the emf formula as another one
Yeah, I put as friction increased with velocity (dynamic), the load torque on the motor will increase thus the rotor speed will reduce....... due to decrease back emf...... to increase the current and torque.
 

Fabrizio

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Equate centripetal with grav as both stars on the same circle
Gotta remember r in centripetal is x/2 and r in grav is x, I forgot this so rip
Not sure about that. Because X is distance between the stars. Doesnt say that its the distance between the center of each star. So i used the radius as well
 

black.mamba

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Not sure about that. Because X is distance between the stars. Doesnt say that its the distance between the center of each star. So i used the radius as well
No, distance between is x and the stars must be on the same circle (and are a diameter across, on opposite sides of the circle) for gravity to pull each star to the middle of the circle and act centripetally
 

Fabrizio

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Anyone know how quickly physics answers get posted. Like about the same as maths or longer?
 

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