Question

Стрела массой 300г. летела со скоростью 30м/с, в течении 15с.Найти силу натяжения лука.​

Answer 1

Ответ:

150 сила

Объяснение:

ну и всё понятно

Answer 2

Calculation of Tension Force in the Bowstring

To calculate the tension force in the bowstring, we can use the equation for centripetal force. The centripetal force required to keep an object moving in a circle is given by the equation:

F = (m * v^2) / r

Where: - F is the centripetal force - m is the mass of the object - v is the velocity of the object - r is the radius of the circular path

In this case, the arrow is moving in a circular path due to the tension force in the bowstring.

Given: - m = 0.3 kg (300g converted to kg) - v = 30 m/s - t = 15 s (time of flight)

We need to find the radius of the circular path to calculate the tension force in the bowstring.

Calculation of Radius of Circular Path

The radius of the circular path can be calculated using the formula:

r = v * t

Where: - r is the radius of the circular path - v is the velocity of the object - t is the time of flight

Substituting the given values: r = 30 m/s * 15 s = 450 m

Calculation of Tension Force

Now that we have the radius of the circular path, we can calculate the tension force using the centripetal force equation:

F = (m * v^2) / r

Substituting the given values: F = (0.3 kg * (30 m/s)^2) / 450 m = 2 N

Therefore, the tension force in the bowstring is 2 Newtons.