Предмет: Физика, автор: victoriareih

Помогите, пожалуйста! Вычислите мощность которую вы развиваете, равномерно поднимаясь по лестнице на второй этаж школы. все необходимые данные получите сами. Масса - 39 кг. Медленно - 1 минута, быстро - 30 секунд. Спасибо, заранее. Высота - 3 метра

Ответы

Автор ответа: kmike21

дано:
m=39 кг
h=3м
t1=60c
t2=30
найти W1 и W2
работа совершаемая при подъеме
А=mgh
мощность W=A/t
W1=A/t1=mgh/t1=39кг*10 Н/кг*3м/60с=19,5 Вт
W2= A/t2=mgh/t2=39кг*10 Н/кг*3м/30с=39 Вт

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