# In an experiment to measure his power, a student records the time taken by him in running in a flight of steps on a staircase. Use the following data to calculate the power of the student:Number of steps = 28Height of each step = 20 cmTime taken = 5.4 sMass of student = 55 kgAcceleration = 9.8 m s-2Due to gravity

Number of steps = 28

Height of each step = 20 cm

Total height of student = 28 * 20 = 560 cm

= 5.6 m

Time, t = 5.4 sec

Mass of student, m = 55kg

Acceleration due to gravity, g = 9.8 m/s2

Power = =

= = 559W (approx)

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