A student drops a 350 gram rock and a 500 gram rock onto a pool from the hieght of 8 meters
To calculate the potential energy of an object, we can use the formula:
Potential Energy (PE) = mass (m) * acceleration due to gravity (g) * height (h)
Where:
- Mass (m) is the mass of the object
- Acceleration due to gravity (g) is approximately 9.8 m/s^2
- Height (h) is the height from which the object is dropped
In this case, the student dropped a 350 gram (0.35 kg) rock and a 500 gram (0.5 kg) rock from a height of 8 meters. Let's calculate their potential energies.
For the 350 gram rock:
PE1 = 0.35 kg * 9.8 m/s^2 * 8 m
PE1 = 27.44 J (joules)
For the 500 gram rock:
PE2 = 0.5 kg * 9.8 m/s^2 * 8 m
PE2 = 39.2 J (joules)
Therefore, the potential energy of the 350 gram rock is 27.44 J and the potential energy of the 500 gram rock is 39.2 J.