Question

пружину жесткость которой 4 кН/м растянули на 3 см. какая потребовалась сила ???

Answer 1

F= k*x
F= 4000Н/м*0,03 м= 120 Н

Ответ: 120 Н

Answer 2

Calculation of the Force Required

To calculate the force required to stretch a spring, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Hooke's Law can be expressed as:

F = k * x

Where: - F is the force applied to the spring, - k is the spring constant (also known as the stiffness or the spring's rigidity), - x is the displacement of the spring from its equilibrium position.

In this case, we are given that the spring constant is 4 kN/m and the spring was stretched by 3 cm (0.03 m). We need to calculate the force required.

Plugging in the given values into Hooke's Law, we get:

F = 4 kN/m * 0.03 m

Calculating this, we find:

F = 0.12 kN

Therefore, the force required to stretch the spring by 3 cm is 0.12 kN (kilonewtons).