Question

Помогите , плиз .Снаряд реактивной установки Катюша массой 42,5 кг после выстрела приобретает скорость 110м/с за 0,5 с . Найти силу реактивной тяги

Answer 1

№ 147. Боевая реактивная установка БМ-13 («катюша») имела длину направляющих балок 5 м, массу каждого снаряда 42,5 кг и силу реактивной тяги 19,6 кН. Найти скорость схода снаряда с направляющей балки.

Answer 2

Calculating the Thrust Force of the Katyusha Rocket Launcher

To calculate the thrust force of the Katyusha rocket launcher, we can use the formula for calculating force, which is:

Force = (Change in Momentum) / (Time Taken)

Given: - Mass of the projectile (m) = 42.5 kg - Initial velocity (u) = 0 m/s (assuming the projectile starts from rest) - Final velocity (v) = 110 m/s - Time taken (t) = 0.5 s

First, we need to calculate the change in momentum using the formula: Change in Momentum = Mass * (Final Velocity - Initial Velocity)

Substitute the given values: Change in Momentum = 42.5 kg * (110 m/s - 0 m/s)

Now, we can calculate the change in momentum and then use it to find the force.

Calculations

Change in Momentum = 42.5 kg * 110 m/s Change in Momentum = 4675 kg m/s

Now, we can calculate the force using the formula: Force = Change in Momentum / Time Taken

Substitute the values: Force = 4675 kg m/s / 0.5 s

Result

The thrust force of the Katyusha rocket launcher is 9350 N.

This calculation is based on the given parameters and the formula for force. If there are additional factors or specific conditions to consider, the calculation may need to be adjusted accordingly.