Question

Арашютист массой 80 кг опускается с постоянной скоростью 6 м/с. Чему равна мощность силы тяжести , действующей на парашютиста?

Answer 1

80•60=4,800 это мой ответ правильный

Answer 2

Calculation of Power

To calculate the power of the gravitational force acting on the parachutist, we can use the formula:

Power = Force × Velocity

The force acting on the parachutist is the gravitational force, which can be calculated using Newton's second law:

Force = mass × acceleration

In this case, the acceleration is the acceleration due to gravity, which is approximately 9.8 m/s^2.

Given that the mass of the parachutist is 80 kg and the velocity is 6 m/s, we can calculate the force as follows:

Force = mass × acceleration = 80 kg × 9.8 m/s^2 = 784 N.

Now, we can calculate the power by multiplying the force by the velocity:

Power = Force × Velocity = 784 N × 6 m/s = 4704 W.

Therefore, the power of the gravitational force acting on the parachutist is 4704 watts.

Please note that the above calculation assumes that the velocity remains constant throughout the descent.