What is the average power output of a weight lifter who can lift 250 kg 2.0 m in 2.0 s?

To calculate the average power output, we use the formula for power ( P = \frac{W}{t} ), where ( W ) is the work done and ( t ) is the time taken. The work done in lifting the weight is calculated as ( W = m \cdot g \cdot h ), where ( m ) is the mass (250 kg), ( g ) is the acceleration due to gravity (approximately 9.81 m/s²), and ( h ) is the height (2.0 m). Thus, ( W = 250 , \text{kg} \cdot 9.81 , \text{m/s}^2 \cdot 2.0 , \text{m} = 4905 , \text{J} ). Finally, the average power output is ( P = \frac{4905 , \text{J}}{2.0 , \text{s}} = 2452.5 , \text{W} ).