please help me find weight at C. SHow all work and will receive 5 stars!! The ro

Question

please help me find weight at C. SHow all work and will receive 5 stars!!

The roller coaster n the figure below starts with a velocity of 17 m/s, One of the riders s 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 n the figure. The heights at points A, B, and C are h_A = 21 m, h_B= 31 m, and h_C = 0. Assume friction s negligible and ignore the kinetic energy of the wheels, (The figure s not necessary drawn to scale.) weight at B weight at C

Explanation / Answer

WEIGHT AT C

potential energy at B = kinetic energy at C

or, mgh+0.5mVa^2=0.5mvc2 or, Vc = 26.4688 m/sec

and centrifugal force = mVc2/r = 910.78

Weight at C = 26*9.8+910.78 = 1165.58N

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