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Old Sep 5th 2008, 09:28 PM   #1
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forces

Hello everyone,

Could someone please tell me if this is correct?

How many forces ar acting upon a moving car on a ramp at 5?

2, the normal force and gravity

Thank you very much
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Old Sep 5th 2008, 10:32 PM   #2
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Friction should be added if the ramp is not smooth
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Old Sep 6th 2008, 08:48 AM   #3
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Originally Posted by chocolatelover View Post
Hello everyone,

Could someone please tell me if this is correct?

How many forces ar acting upon a moving car on a ramp at 5?

2, the normal force and gravity

Thank you very much
Originally Posted by werehk View Post
Friction should be added if the ramp is not smooth
wherhk is correct. Howver I will add to this by saying that in Introductory Physics if nothing is mentioned to imply friction is present we can say that it isn't there. That rule of thumb is pretty universal.

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