Question

из ружья выстрели пулей массой 16гр при этом она получила скорость 600м/с.Скорость отдачи ружья 1,2 м/с.Какова масса ружья?

Answer 1

mv - импульс тела

m1v1=m2v2 получаем 0,016кг(16гр)*600м/с=1,2м/с*Х

 отсюда Х=8

ответ: 8 кг 

Answer 2

Calculation of the Mass of the Rifle

To calculate the mass of the rifle, we can use the principle of conservation of momentum. The momentum of the bullet before it is fired is equal to the momentum of the bullet and the rifle combined after the bullet is fired.

The momentum of an object is calculated by multiplying its mass by its velocity. In this case, the momentum of the bullet before it is fired is given by:

Momentum of the bullet before firing = mass of the bullet × velocity of the bullet

The momentum of the bullet and the rifle combined after the bullet is fired is given by:

Momentum of the bullet and rifle after firing = (mass of the bullet + mass of the rifle) × velocity of the bullet and rifle

According to the principle of conservation of momentum, these two momenta should be equal:

Momentum of the bullet before firing = Momentum of the bullet and rifle after firing

Using this equation, we can solve for the mass of the rifle.

Let's substitute the given values into the equation:

Mass of the bullet = 16 g = 0.016 kg Velocity of the bullet = 600 m/s Velocity of the rifle = 1.2 m/s

0.016 kg × 600 m/s = (0.016 kg + mass of the rifle) × (600 m/s + 1.2 m/s)

Simplifying the equation:

9.6 kg·m/s = (0.016 kg + mass of the rifle) × 601.2 m/s

To solve for the mass of the rifle, we can rearrange the equation:

mass of the rifle = (9.6 kg·m/s) / 601.2 m/s - 0.016 kg

Calculating the mass of the rifle:

mass of the rifle = (9.6 kg·m/s) / 601.2 m/s - 0.016 kg

mass of the rifle ≈ 0.159 kg

Therefore, the mass of the rifle is approximately