Определить силу сопротивления доски если масса молотка 0.5 кг, в момент касания молотка скорость v=10м/с. гвоздь за один удар входит на расстояние s=20 мм

Истинная причина появления выталкивающей силы – это наличие различного гидростатического давления в разных точках жидкости. Выталкивающая сила, действующая на тело, погруженное в жидкость, равна по модулю весу вытесненной жидкости и противоположно ему направлена.

українською

Справжня причина появи сили, що виштовхує - це наявність різного гідростатичного тиску в різних точках рідини. Виштовхуюча сила, що діє на тіло, занурене в рідину, дорівнює по модулю вазі витісненої рідини і протилежно йому направлена.

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