На шарообразное тело массой 55 кг действует сила притяжения, равная 508 Н. На какой высоте над поверхностью Земли находится тело? Радиус Земли считать равным 6398096 м, масса Земли 5,98⋅1024 кг. Нужен только ответ

please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please

Дано:

Масса троллейбуса: m = 12 × 10³ кг.

Время движения: t = 5 c.

Пройденный путь: S = 10 м.

Коэффициент трения: μ = 0,02.

Ускорение свободного падения: g = 10 м/с².

Найти нужно силу тяги: Fт — ?

1. Запишем уравнение зависимости пути от времени: а так как , то

2. Выразим ускорение из (1):

3. Распишем силы действующие на тело по оси Oy:

4. Распишем силы действующие на тело по оси Ox:

5. Сила трения по определению и с учётом (3):

6. Выразим силу тяги из (4):

7. Объединяем формулы (2), (5) и (6):

Численно получим:

(H).

Переведём в кН для удобства: 12000 Н = 12 кН.

ответ: 12 кН.

Объяснение:

Поно 5 звезд и лучшый ответ позяяч