Question

A skier with a potential energy of 137,200 J waits on top of a ski jump that is 200 m high. What is the mass of the skier?

Answer 1

Answer:

70kg

Explanation:

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Answer 2

Given:

Potential energy of the skier $=137200J$

Height $=200m$

To find:

The mass of the skier

Solution:

The potential energy of the object is the energy possessed by an object by virtue of its height or displacement from a base mean position.

Mathematically,     $P.E.=mgh$

We have,

$P=137200J$         $;$ $g=9.8 m/s^{2}$      $;$ $h=200m$

Hence, we get

$137200=m(9.8)(200)$

$137200=m(1960)$

$m=70$ $kg$

Final answer:

Hence, the mass of the skier is 70 kg.