Question

СРООООЧНО Турист піднімається по схилу гори завдовжки 1 км. Визначити роботу сили тяжіння, що діє на туриста, якщо його маса 90 кг, а кут нахилу 300. Прискорення вільного падіння g=10 м/с2. Відповідь подайте у кН

Answer 1

Решение на фото/////

Answer 2

Calculating the Work Done Against Gravity

To calculate the work done against gravity as the tourist climbs the mountain, we can use the formula:

Work = Force × Distance × cos(θ)

Where: - Force is the force exerted against gravity, which is the weight of the tourist. - Distance is the displacement along the incline. - θ is the angle of inclination.

Given: - Distance (d) = 1 km = 1000 m - Mass (m) = 90 kg - Angle of Inclination (θ) = 30 degrees - Acceleration due to gravity (g) = 10 m/s^2

First, let's calculate the force exerted against gravity:

Force = Mass × Acceleration due to gravity Force = 90 kg × 10 m/s^2 Force = 900 N

Now, we can calculate the work done against gravity:

Work = 900 N × 1000 m × cos(30°) Work = 900 N × 1000 m × 0.866 Work ≈ 779,400 Nm

Therefore, the work done against gravity as the tourist climbs the mountain is approximately 779,400 Nm or 779.4 kN.