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cantleave
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1. Here is the sketch:
http://i.stack.imgur.com/0s1is.jpg
The sketch is supposed to be side-view of the path of the object.
The following values are known:
- r - radius of the circle that describes the path AB of the object
- a - angle that characterizes the part of a circle that describes the path AB of the point
- m - mass of the point
- V0 - velocity
The dashed line is the object's trajectory after it leaves AB. N is the normal force, T is friction and g is the gravitational acceleration.
2. What I need to find out:
1. Equation of motion for AB
2. Equation of motion for BC
3. velocity at B
4. The distance DC
3. The Attempt at a Solution
I was able to solve this problem partially when AB is a straight line and 'a' represents the angle between AB and AD. So far I could come up with only this:
m*(x)'' = -T-mgsin(?) <- in place of the question mark I would need the angle between AB and AD
m*(y)'' = N-mgcos(?)
N = mgcos(?)
T = μN = μmgcos(?)
(x)'' = -g(μcos(?) + sin(?))
(x)' = -gt(μcos(?) + sin(?)) + c1
x = ((-9t^2)/2)(μcos(?) + sin(?)) + c1 + c2
where μ is the coefficient of friction. x and y are functions of the x and y coordinates with respect to time.
How do I deal with the fact the ramp is no longer a straight line but a curved line? I need to solve this problem, otherwise I cannot apply for taking the exam in mechanics 1. I appreciate any thoughts. Thank you very much for your help.
By the way, I'm so happy I found this place and I also signed up for a free membership at educator.com. This is awesome, I never had access to this much knowledge in form of video-courses.
Thank you physicsforum.com and educator.com!
http://i.stack.imgur.com/0s1is.jpg
The sketch is supposed to be side-view of the path of the object.
The following values are known:
- r - radius of the circle that describes the path AB of the object
- a - angle that characterizes the part of a circle that describes the path AB of the point
- m - mass of the point
- V0 - velocity
The dashed line is the object's trajectory after it leaves AB. N is the normal force, T is friction and g is the gravitational acceleration.
2. What I need to find out:
1. Equation of motion for AB
2. Equation of motion for BC
3. velocity at B
4. The distance DC
3. The Attempt at a Solution
I was able to solve this problem partially when AB is a straight line and 'a' represents the angle between AB and AD. So far I could come up with only this:
m*(x)'' = -T-mgsin(?) <- in place of the question mark I would need the angle between AB and AD
m*(y)'' = N-mgcos(?)
N = mgcos(?)
T = μN = μmgcos(?)
(x)'' = -g(μcos(?) + sin(?))
(x)' = -gt(μcos(?) + sin(?)) + c1
x = ((-9t^2)/2)(μcos(?) + sin(?)) + c1 + c2
where μ is the coefficient of friction. x and y are functions of the x and y coordinates with respect to time.
How do I deal with the fact the ramp is no longer a straight line but a curved line? I need to solve this problem, otherwise I cannot apply for taking the exam in mechanics 1. I appreciate any thoughts. Thank you very much for your help.
By the way, I'm so happy I found this place and I also signed up for a free membership at educator.com. This is awesome, I never had access to this much knowledge in form of video-courses.
Thank you physicsforum.com and educator.com!
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