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She starts from rest at a height h1 of 26.6 m. When she is partway down the slide, at a height h2 of 13.6 m, she is moving at a speed of 1.70 m/s. Calculate the mechanical energy lost due to friction

Respuesta :

Answer:

the mass of the child is not given and the question is not complete

but heres the solution.

Using the law of conservation of energy

Initial gravitational energy = work done by friction +  work done gained by kinetic energy

mgh = w + 0.5m[tex]v^{2}[/tex]

w =29kg ×9.8m.[tex]s^{-2}[/tex] ×13m - 0.5×29kg×1.70m.[tex]s^{-1}[/tex]

w =3669.95 J

Explanation:

Explanation:

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