- #1
UCrazyBeautifulU
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A skateboard track has the form of a circular arc with a 4.00 m radius, extending to an angle of 90.0° relative to the vertical on either side of the lowest point, as shown in the figure below.
A 55.9 kg skateboarder starts from rest at the top of the circular arc. What is the normal force exerted on the skateboarder at the bottom of the circular arc?
3287 N was not the correct answer.
can anyone give me some pointers on this problem? Sorry I can't post the picture for some reason.
I was figuring it out this way, but it isn't right:
the normal force exerted on the skateboarder at the bottom of the circular arc = 6mg
= 55.9 x 6 x 9.8 N
A 55.9 kg skateboarder starts from rest at the top of the circular arc. What is the normal force exerted on the skateboarder at the bottom of the circular arc?
3287 N was not the correct answer.
can anyone give me some pointers on this problem? Sorry I can't post the picture for some reason.
I was figuring it out this way, but it isn't right:
the normal force exerted on the skateboarder at the bottom of the circular arc = 6mg
= 55.9 x 6 x 9.8 N