.,.,.,.,..,.,.,..,.,.,..,.,.,.,..,,.,.
P = mg
m = 64 кг
g = 10 м/с^2
P = 64 * 10 = 640 Н
ответ: 640 Н
.,.,.,.,..,.,.,..,.,.,..,.,.,.,..,,.,.
P = mg
m = 64 кг
g = 10 м/с^2
P = 64 * 10 = 640 Н
ответ: 640 Н