Question

Тело массой 10 кг поднимают вертикально вверх с ускорением 5 м/с2 на высоту 20 м. Пренебрегая сопротивлением воздуха, найти совершенную при этом работу.

Answer 1

Работу находим по формуле: 
               A=Fh
Где һ- высота
         А=mgh= 10*10*20=2000 Дж=2 кДж 

Answer 2

Calculation of Work Done

To find the work done in lifting a 10 kg object vertically upwards with an acceleration of 5 m/s^2 to a height of 20 m, we can use the formula for work:

Work = Force x Distance

In this case, the force can be calculated using Newton's second law of motion:

Force = Mass x Acceleration

Given: - Mass (m) = 10 kg - Acceleration (a) = 5 m/s^2 - Height (h) = 20 m

First, let's calculate the force:

Force = Mass x Acceleration Force = 10 kg x 5 m/s^2 Force = 50 N Now, we can calculate the work done:

Work = Force x Distance Work = 50 N x 20 m Work = 1000 J

Therefore, the work done in lifting the 10 kg object vertically upwards with an acceleration of 5 m/s^2 to a height of 20 m is 1000 Joules.