A 33.0 kg seal at an amusement parkslides down a ramp into the pool below. The t

Question

A 33.0 kg seal at an amusement parkslides down a ramp into the pool below. The top of the ramp is1.60 m higher than the surface of thewater and the ramp is inclined at an angle of 30.0° above thehorizontal. The seal reaches the water with a speed of 4.90 m/s. (a) What is the work is done by kineticfriction?
(b) What is the coefficient of kinetic friction between the sealand the ramp?

(a) What is the work is done by kineticfriction?
(b) What is the coefficient of kinetic friction between the sealand the ramp?

Explanation / Answer

1. Conservation of energy mgh = .5mv2 + Wf Wf = mgh - .5mv2 2. Solve for Wf = FNd Replace d by solving for the hypotenuse. Wf = * (mgcos()) * h/sin() Wf / ((mgcos()) * h/sin()) =

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