a person weighing 65kg walks up steps that are 20cm high how much work does the person do going up each step

m * g * h

65 * 9.8 * .2

To calculate the work done by a person walking up each step, we need to consider the weight of the person and the height of each step.

1. Convert the height of each step to meters: 20 cm = 0.2 m.
2. Find the work done for each step using the formula: work = force × distance.
3. The force exerted by the person is equal to their weight, which is given as 65 kg. The weight can be calculated as force = mass × gravity, where gravity is approximately 9.8 m/s^2.
force = 65 kg × 9.8 m/s^2.
4. Multiply the force by the distance, which is 0.2 m, to get the total work done for each step.
work = force × distance.

Plugging in the values:
work = (65 kg × 9.8 m/s^2) × 0.2 m = 127.4 Joules.

Therefore, the person does approximately 127.4 Joules of work going up each step.