Question

Літак під дією сили тяги 500 кН рухається горизонтально над землею зі швидкістю 200 м/с. Чому дорівнює робота сили тяжіння? ДАЮЮЮ 30 БАЛЛОВ ОТВЕТЬТЕ

Answer 1

Ответ:

Зi швидкiстю доiвнюэ робота над тяжiння 500кH ÷ 200= 2,5 кH

Answer 2

When a plane is moving horizontally above the ground with a thrust force of 500 kN and a speed of 200 m/s, we can calculate the work done by the force of gravity. #### Calculating the work done by the force of gravity: The work done by a force is given by the formula: **Work = Force × Distance × cos(θ)** In this case, the force of gravity is acting vertically downwards, and the plane is moving horizontally. Therefore, the angle between the force of gravity and the displacement is 90 degrees, and the cosine of 90 degrees is 0. Since the work done by the force of gravity is zero, the answer to the question "Чому дорівнює робота сили тяжіння?" (What is the work done by the force of gravity?) is **zero**. Please note that the work done by the force of gravity is zero because the displacement is perpendicular to the force. The force of gravity does not contribute to the horizontal motion of the plane. I hope this answers your question! Let me know if you have any further inquiries.