Calculate the Average Power Output of a Weightlifter

What is the average power output of a weightlifter who can lift 276 kg to a height of 1.81 m in 0.81 s?

A) 4908.8536 W
B) 6050.56 W
C) 276 kg
D) 1.81 m

Answer

The average power output of a weightlifter lifting 276 kg to a height of 1.81 m in 0.81 s is approximately 6050.22 W, which is closest to option B) 6050.56 W.

Power is defined as the rate at which work is done or energy is transferred. It can be calculated using the formula Power (P) = Work (W) / Time (t). In this case, the weightlifter lifts a weight of 276 kg to a height of 1.81 m in 0.81 s.

To calculate the work done, we use the formula Work (W) = mass (m) × acceleration due to gravity (g) × height (h). With the given values: m = 276 kg, g = 9.8 m/s², and h = 1.81 m, we find the work done is 4900.68 J.

Dividing the work done by the time taken, we get the average power output of the weightlifter: P = 4900.68 J / 0.81 s = 6050.22 W. Therefore, the average power output is approximately 6050.22 W, which aligns with option B) 6050.56 W, considering minimal rounding differences.