일반물리학 1 — Potential Energy and Conservation of Energy: Problem 22

22 A 70 kg skier starts from rest at height $H = 22 \text{ m}$ above the end of a ski-jump ramp (Fig. 8-25) and leaves the ramp at angle $\theta = 28^\circ$. Neglect the effects of air resistance and assume the ramp is frictionless. (a) What is the maximum height $h$ of his jump above the end of the ramp? (b) If he increased his weight by putting on a backpack, would $h$ then be greater, less, or the same?