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If you slide down a rope, it’s possible to create enough thermal energy to burn your hands or your legs where they grip the rope. Suppose a 40 kg child slides down a rope at a playground, descending 2.0 m at a constant speed. How much thermal energy is created as she slides down the rope?

Respuesta :

Answer:

Thermal energy will be equal to 784 J

Explanation:

We have given that mass of the child m = 40 kg

Height h = 2 m

Acceleration due to gravity [tex]g=9.8m/sec^2[/tex]

We have to find the thermal energy '

The thermal energy will be equal to potential energy

And we know that potential energy is given by

[tex]W=mgh=40\times 9.8\times 2=784J[/tex]

So the thermal energy will be equal to 784 J

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