Wednesday
October 1, 2014

Homework Help: Physics

Posted by Casey on Thursday, May 26, 2011 at 8:55pm.

A child rides on a Ferris Wheel at the State Fair.
The seat always faces to the right. There are three forces that act on the child,the child’s weight, W, the normal force of the seat,N, and the force of friction between the child and the seat, f.

At which listed location(s) does the gravitational force, W, contribute to the centripetal
force on the child and not oppose it?
a. top
b. Mid way on right side
c. bottom
d. top and bottom

My answer: a

At which position(s) will the magnitude of the normal force, N, be the greatest?
a. top
b. midway to the right
c. bottom
d. midway to the left
e. It is the same at all the listed locations.

My answer: C

If friction were very small and there is no grab bar across the seat, where would the child be in the greatest danger?
a. top
b. midway far right
c. bottom
d. midway far left
e. The danger is the same everywhere.

My answer: e
Are this assumptions correct??

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