In a device like the one shown below, the mass of the cylinder is 8 kg and the cylinder falls a distance of 200 m. As a result, the temperature of the water increases by 4.2°C. What would the increase in temperature be if the mass of the cylinder were 16 kg?

Increase in the temperature of water would be 8.4 degree C

Explanation:

As we know by energy conservation

Change in the gravitational potential energy of the cylinder = increase in the thermal energy of the water

Here we know that the gravitational potential energy of the cylinder is given as

here we have

m = 8 kg

h = 200 m

now we can say

now if the mass of the cylinder is increase to 16 kg

then we have

now from above two equations

explanation:

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