Механика и простые механизмы · GCSE Physics Topic 5 (Forces & Motion)
Симулятор первого закона Ньютона и инерции
Симулятор первого закона Ньютона и наклонной плоскости Галилея: закон инерции
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- Вывод формул
- Режим проектора
- Печатный лист A4
Окно 3D симуляции● 60 FPS
Параметры эксперимента
cm
kg
Расчёты и показатели в реальном времени
Скорость у основания
--
Тормозной путь
--
Время торможения
--
Сопротивление трения
--
Вывод формул в реальном времени
Основная формула:
--Подстановка значений:
--Физическое состояние: --
Разбор типовых задач и анализ экзаменационных ошибок
Worked Problem
Условие задачи: Why must the cart be released from the same height on the incline across all surface tests?
Пошаговый вывод формул:
- Control of variables: Equal release height ensures identical bottom velocity v0 (mgh = 0.5mv0²), making distance comparisons valid.
Worked Problem
Условие задачи: A 0.2kg cart reaches 2m/s at base and experiences 0.2N friction on wood. How far does it slide?
Пошаговый вывод формул:
- Decel a = 0.2/0.2 = 1m/s². Stopping distance s = 2²/(2*1) = 2m. Stop time t = 2s.
Рабочий лист для урока и домашние задания
Q1. Variant 1: Can Newton's First Law be directly proven by laboratory experiment alone?
Answer Key: No. Frictionless conditions cannot be fully realized. It is derived through scientific deduction based on empirical observations.
Q2. Variant 2: What determines inertia? Does a faster object possess greater inertia?
Answer Key: Inertia depends solely on mass. It is independent of speed or external forces.
Q3. Variant 3: An airplane flies steadily dropping bombs every 1s. Neglecting drag, what pattern do ground observers see?
Answer Key: By inertia, all bombs retain the airplane's horizontal velocity, forming a vertical straight line directly beneath the aircraft.
Часто задаваемые вопросы и типичные заблуждения
Does an "inertial force" exist?
No! Inertia is an intrinsic property, not a physical force. Say "due to inertia", never "acted on by inertial force".
How do seatbelts mitigate inertia risks in car crashes?
During sudden deceleration, passengers continue forward by inertia. Seatbelts restrain the body, reducing shock force.
What happens to an orbiting satellite if gravity abruptly disappears?
The satellite flies off in a straight line along the tangential velocity vector at constant speed.
When patting clothes to remove dust, whose inertia is being used?
The dust's inertia. The fabric moves abruptly when patted, while the dust particles remain at rest by inertia.