Question

Спортсмен кидает снаряд массой 33 кг на высоту 2 м за 1.5 с. Определить мощность развиваемую спортсменом в течении этого времени

Answer 1

Формула есть какая-нибудь?

Answer 2

Calculation of Power

To determine the power developed by the athlete, we can use the formula:

Power = Work / Time

The work done by the athlete can be calculated using the formula:

Work = Force × Distance

In this case, the force can be calculated using the formula:

Force = Mass × Acceleration

Since the object is thrown vertically upwards, the acceleration is equal to the acceleration due to gravity, which is approximately 9.8 m/s².

Given: - Mass of the projectile (m) = 33 kg - Height (h) = 2 m - Time (t) = 1.5 s

Let's calculate the power developed by the athlete.

Calculation Steps:

1. Calculate the force exerted by the athlete: - Force = Mass × Acceleration - Force = 33 kg × 9.8 m/s²

2. Calculate the work done by the athlete: - Work = Force × Distance - Distance = 2 m (since the projectile is thrown vertically upwards) - Work = Force × 2 m

3. Calculate the power developed by the athlete: - Power = Work / Time

Let's perform the calculations.

Calculation:

1. Calculate the force exerted by the athlete: - Force = 33 kg × 9.8 m/s² = 323.4 N 2. Calculate the work done by the athlete: - Work = 323.4 N × 2 m = 646.8 J

3. Calculate the power developed by the athlete: - Power = 646.8 J / 1.5 s = 431.2 W

Answer:

The athlete develops a power of 431.2 Watts during the 1.5 seconds it takes to throw a projectile with a mass of 33 kg to a height of 2 meters.

Please note that the calculations assume ideal conditions and do not take into account factors such as air resistance or the efficiency of the athlete's movements.