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07-07-2017
Physics

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A 84-kg hiker starts at an elevation of 1500 m and climbs to the top of a 3100-m peak. what is the hikers change in potential energy?

Respuesta :

07-07-2017

[tex]Given:\\m=84kg\\h_0=1500m\\h_1=3100m\\g=9,81 \frac{m}{s^2} \\\\Find:\\\Delta E_p=?\\\\Solution\\\\\Delta E_p=E_p_1-E_p_0\\\\E_p=mgh\\\\\Delta E_p=mgh_1-mgh_0=mgh(h_1-h_0)\\\\\Delta E_p=84kg\cdot 9,81 \frac{m}{s^2} (3100m-1500m)=1318464J[/tex]

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