Question

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?

Answer 1

Thermal energy will be equal to 784 J

Step-by-step explanation:

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

Height h = 2 m

Acceleration due to gravity
`g=9.8m/sec^2`

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

`W=mgh=40* 9.8* 2=784J`

So the thermal energy will be equal to 784 J