Question

Подъёмный кран поднимает плиту массой 1т вертикально вверх с ускорением 0,2 м/с2(в квадрате). Сила натяжения каната, удерживающего плиту,(в кН) равна.......

Answer 1

F1-mg=ma

F1=m(g+a)=10000 Н=10кН

F2=-F1=-10кН - 3закон Ньютона

Ответ: 10кН 

Answer 2

Calculation of Tension Force

To calculate the tension force in the cable holding the plate, we can use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration.

Given: - Mass of the plate (m) = 1 ton = 1000 kg - Acceleration (a) = 0.2 m/s^2

Using the formula F = m * a, we can calculate the tension force (F) in the cable:

F = m * a = 1000 kg * 0.2 m/s^2 = 200 kg m/s^2

However, the unit of force is Newtons (N), not kg m/s^2. To convert the unit, we can use the fact that 1 N = 1 kg m/s^2. Therefore, the tension force in the cable is:

F = 200 N

So, the tension force in the cable holding the plate is 200 Newtons.