Final answer:
The potential energy gain of a 60kg man climbing two flights of stairs to gain 6 meters in altitude is 3600 Joules, using the formula G.P.E. = mgh.
Step-by-step explanation:
The student is asking about the potential energy gain when a man with a mass of 60kg climbs two flights of stairs and gains an altitude of 6 meters. To calculate this, the formula for gravitational potential energy (G.P.E.) can be used, which is G.P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity, and h is the height gained.
In this scenario, we have a mass (m) of 60 kg, gravity (g) assumed to be 10 m/s² for simplicity, and a height (h) of 6 meters. So the potential energy gain is given by:
G.P.E. = 60 kg * 10 m/s² * 6 m = 3600 Joules.
This means the man gains 3600 Joules of potential energy by climbing to the third floor.