Calculate the contact force between the skis and the track

AI Thread Summary
To calculate the contact force between the skis and the track at point O, the ski jumper's mass and the parabolic equation of the track are provided. The jumper's potential energy at the start is converted to kinetic energy at point O, where the velocity is zero. The discussion highlights the need for additional equations or information to determine the velocity at point O and subsequently calculate the contact force. Participants suggest focusing on energy conservation principles and relevant equations to solve for the unknowns. Understanding these concepts is crucial for completing the calculations accurately.
Alexanddros81
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Homework Statement


14.37 A 75-kg ski jumper starts his run in the position shown on the parabolic
track. The equation of the parabola is ##y = (12/225)x^2##, where x and y are in meters.
Neglecting friction, calculate the contact force between the skis and the track at O.

Fig P14_37.jpg


Homework Equations

The Attempt at a Solution


[/B]
At pont A (start of run):

##Vg_A=mg(12)##
##T_A=0##

At pont O:

##Vg_O = 0##
##T_O=1/2mv_O^2##

Something is missing?
Any hints how to continue?
 

Attachments

  • Fig P14_37.jpg
    Fig P14_37.jpg
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Alexanddros81 said:
Something is missing?
Indeed ! Some relevant equations featuring the variables and given information !
 
Alexanddros81 said:
how to continue?
So can you find the velocity at O?
What else do you need to know to figure out the force there?
 
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