Предмет: Физика, автор: prokopenkonada396

Яку роботу треба виконати, щоб підняти вантаж масою 20 кг на висоту 3м? СРОЧНО!! ПОМОГИТЕ,ПОЖАЛУЙСТА!)

Ответы

Автор ответа: kaktus4530

Ответ:

Щоб підняти вантаж масою 20 кг на висоту 3 метри, потрібно виконати роботу проти сили тяжіння (ваги) та проти сили гравітації. Робота визначається формулою:

Робота = Сила×Відстань×сos(кут між напрямком сили та напрямком руху (у цьому випадку 0°, оскільки вантаж піднімається прямо вгору))

Отже, потрібно виконати роботу приблизно 588 Дж, щоб підняти вантаж масою 20 кг на висоту 3 метри проти сили тяжіння та гравітації.

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