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Physics 21 Online
OpenStudy (anonymous):

a car turns a corner going 8m/s. The corner has 30 meters. A.find the centripetal acceleration of the car B. If the car is 1200kg find the centripetal force necessary to turn the corner C.what gives the centripetal force to the car?

OpenStudy (anonymous):

Have you drawn a free body diagram yet?

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

Do you know what that is?

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

Well, after you draw a free body diagram or find all the forces you will then combined two equations \[\sum_{?}^{?}F=ma _{r} \] and \[a _{r}=m(v ^{2}/r) \]

OpenStudy (anonymous):

Have you seen either of those equations?

OpenStudy (anonymous):

Would you like me to help you with a free body diagram as well?

OpenStudy (anonymous):

yes i had

OpenStudy (anonymous):

yes please

OpenStudy (anonymous):

okay. |dw:1417494083510:dw|

OpenStudy (anonymous):

Those will be your sum of the forces or \[\sum_{}^{}F \]

OpenStudy (perl):

do you need help?

OpenStudy (perl):

|dw:1417494780126:dw|

OpenStudy (perl):

what does this mean, the corner is 30 meters

OpenStudy (perl):

I suppose that is the radius

OpenStudy (anonymous):

That's what I took it as, but I read it quickly. I notice why you are asking now.

OpenStudy (perl):

|dw:1417494975022:dw|

OpenStudy (anonymous):

I think she might be working the problem out now since she was responding right away.

OpenStudy (perl):

@rachelsmith0 Please check ( will delete after you check) for the first one i got a) a = v^2/r = 8^2/30 b) F = m*v^2/r = 1200 * 8^2 / 30 c) the friction from the road supplies the force to turn the car

OpenStudy (perl):

@rachelmsmith0

OpenStudy (anonymous):

yes those were all of my thoughts exactly

OpenStudy (anonymous):

if 30 is radius... if 30 is radius I can't quite figure out how to change meters into radius.

OpenStudy (perl):

what do you mean change meters into radius

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