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# A 5kg steel ball is dropped onto a copper plate from a heightof 10m. If the ball leaves a dent 3.2mm deep, what is the averageforce exerted by the plate on the ball during impact?

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A 5kg steel ball is dropped onto a copper plate from a heightof 10m. If the ball leaves a dent 3.2mm deep, what is the averageforce exerted by the plate on the ball during impact?

$$\displaystyle{K}_{{i}}+?{W}={K}_{{f}}$$
$$\displaystyle{0}+{\left[{F}_{{g}}\triangle{y}{\cos{{0}}}+{F}_{{p}}\triangle{x}{\cos{{180}}}\right]}={0}$$
$$\displaystyle{0}+{m}{g{{\left({10}\right)}}}-{F}_{{p}}{\left({0.00320}\right)}={0}$$
Or $$\displaystyle{F}_{{p}}={1.53}\cdot{10}^{{5}}$$