The weightlifter lifted a 1200H barbell to a height of 70cm in 0.3 seconds. How much power did the athlete develop?
| February 6, 2021 | education
Initial data: P (weight of the lifted rod) = 1200 N; h (the height the weight lifter lifted the barbell) = 70 cm (0.7 m); t (duration of lifting the bar) = 0.3 s.
The power that the weightlifter developed when lifting the barbell is determined by the formula: N = A / t = F * S / t = P * h / t.
Let’s perform the calculation: N = 1200 * 0.7 / 0.3 = 2800 W (2.8 kW).
Answer: When lifting the bar, the weightlifter was able to develop a power of 2.8 kW.
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