Wednesday
July 23, 2014

Homework Help: Physics

Posted by R on Wednesday, May 8, 2013 at 12:01am.

The roller coaster starts with a velocity of 16 m/s. One of the riders is a small girl of mass 26 kg. Find her apparent weight when the roller coaster is at locations B and C. At these two locations, the track is circular, with the radii of curvature given.

rB = 10 m,
rC = 20 m,

The heights at points A, B, and C are
hA = 22 m,
hB = 32 m,
and
hC = 0.

Assume friction is negligible and ignore the kinetic energy of the wheels. (The figure is not necessarily drawn to scale.)

What is the weight at B?

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