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
Question
Question
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
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:
Below is an attachment containing the solution.