Question

Помогите пожалуйстаЧтобы удалить гвоздь длинной 10 см из бревна необходимо приложить начальную силу 2кН.Гвоздь вытащили из бревна.Какую при этом совершили механическую работу

Answer 1

A = F*S = 2000 H * 0,1 м = 200 Дж

Answer 2

Calculation of Mechanical Work

To calculate the mechanical work done to remove a nail from a log, we need to consider the force applied and the distance over which the force is applied.

Given: - Length of the nail: 10 cm - Initial force applied: 2 kN (kilonewtons)

To calculate the mechanical work, we can use the formula:

Work = Force × Distance

In this case, the force is given in kilonewtons (kN) and the distance is given in centimeters (cm). We need to convert the force to newtons (N) and the distance to meters (m) for consistent units.

Converting the force: 1 kN = 1000 N

Converting the distance: 1 cm = 0.01 m

Now we can calculate the mechanical work:

Work = (Force in N) × (Distance in m)

Work = (2 kN × 1000 N/kN) × (10 cm × 0.01 m/cm)

Work = 2000 N × 0.1 m

Work = 200 N·m

Therefore, the mechanical work done to remove the nail from the log is 200 N·m.