Question

Решите m=15 кг k=10кН/м А-?

Answer 1

Сила упругости Fупр = kx.

В то же время, по первому закону Ньютона, Fупр = mg.

mg = kx,

x = mg/k.

Работа по растяжению пружины равна максимальной потенциальной энергии пружины:

A = kx2/2 = km2g2/2k2 = (mg)2/(2k) = (15×10)2/(2×10) = 1125 Дж.

Ответ: 1125 Дж.

Answer 2

To solve for the acceleration (A), we can use Newton's second law of motion, which states:

Force (F) = mass (m) * acceleration (A)

Given: m = 15 kg (mass) k = 10 kN/m (spring constant)

Since the spring constant is given in kilonewtons per meter (kN/m), we need to convert it to newtons per meter (N/m) before using it in the equation.

1 kN = 1000 N So, k = 10 kN/m = 10 * 1000 N/m = 10,000 N/m

Now, we can calculate the acceleration (A):

F = k * x

where x is the displacement from the equilibrium position (compression or extension of the spring).

Since we don't have the displacement (x) value provided in the question, we cannot find the acceleration (A) with the given information. We need the value of the displacement to proceed with the calculation.