Physics 1-15-09 Torque Problems Review
PHYSICS: Hey guys, here are the torque problems that we reviewed on Thursday. Hey, you can do these! First, be careful about how you set them up, and then all you have to remember is the two conditions of equilibrium and use those equations to work the problems: all the forces up are equal to all the forces down, and all the clockwise torques equal all of the counterclockwise torques. Don’t just wait for me to work them for you, you’ll never learn them that way. Try them, and then try them again. And then try them again! You can do it!!
January 15th, 2009 at 7:10 PM
Has anyone figured out number six on the torque worksheet one? I know that she drew it out today but I’m still having a very hard time with all of these.
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January 15th, 2009 at 10:57 PM
Hey does any body know how to do number three on the torque worksheet two? I have to forces acting up at the wheels and on force acting down at the center of gravity. Is there another force I am missing? the numbers aren’t working out…
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January 15th, 2009 at 10:59 PM
oh its number five not number three. sorry
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January 16th, 2009 at 2:27 AM
To Meredith: Since you know how she drew it, I’ll just explain the formulas.
FL = Force of the left hand
FR = Force of the right hand
TC = TCC (Make the pivot point at the point where FL is)
FR = [(30.0N)(0.35m) + (100.0N)(2.00m)] / 0.8m
To Jordan: I think you’re doing what I did…It’s asking for the force exerted by each individual tire. The rear axle has two tires and the front axle has two tires. Divide your answers in half and see if that works. It took me a good 10 minutes to figure out that a car has 4 wheels…
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January 16th, 2009 at 7:38 AM
does anyone know how to do number four on the second worksheet… its probably simple but i cant figure out what im doing wrong…
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January 16th, 2009 at 2:26 PM
How do you solve a problem with TWO unknown forces?
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January 16th, 2009 at 2:29 PM
Rolynne:
On a problem with 2 unknown forces, you have to use one unknown as the axis and set the other side up to zero.
I hope I answered your question enough.
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January 16th, 2009 at 2:29 PM
oh yes you did:) Thanksies
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January 17th, 2009 at 8:27 PM
When you do a torque problems And there isn’t an axis of rotation do you measure the distance from the center of gravity?
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January 17th, 2009 at 9:33 PM
Hey…what was the answer to number 10 part a on the first torque worksheet? I remember going over it in class but I was just trying to make sure I was getting the right answer.
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January 17th, 2009 at 10:42 PM
how do you know what problems need an axis of rotation and which ones don’t? they all look the same to me :/
shelby ann :]
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