The potential energy of an apple is 4.5 joules. The apple is 3.2 meters high. What is the mass of the apple?
1 Answer
Feb 8, 2016
The mass of the apple is
Explanation:
Potential energy in joules is mass (in kg,) multiplied by the acceleration due to gravity (9.8 m/sec^2) multiplied by height in meters.
Rearranging to make the mass the subject:
Hence it is 4.5 divided by (9.8 times 3.2) multiplied by 1000 for converting into grams, i.e. approximately