Question

Визначити силу, що діє на тіло масою 200 г, що рухалось 5 хвилин зі стану спокою з швидкістю 36 км/год.

Answer 1

Дано:

m=200 г=0,2 кг

t=5 хв=300 с

υ0=0 м/с

υ=36 км/год=10 м/с

F-?

Розв'язання:

α=υ-υ0/t=10-0/300≈0,03 м/с2

F=mα=0,2×0,03=0,006 Н

Відповідь:F=0,006 Н.

Answer 2

Calculating the Force Acting on the Body

To calculate the force acting on the body, we can use the formula:

Force (F) = Mass (m) × Acceleration (a)

First, let's convert the given speed from km/h to m/s: 36 km/h = 36 × (1000 m / 3600 s) = 10 m/s

Now, we can calculate the acceleration: Acceleration (a) = Change in velocity / Time taken Given that the body started from rest, the initial velocity is 0 m/s, and the final velocity is 10 m/s. The time taken is 5 minutes, which is 300 seconds.

Acceleration (a) = (10 m/s - 0 m/s) / 300 s = 0.0333 m/s^2

Now, we can calculate the force: Force (F) = Mass (m) × Acceleration (a) Given mass (m) = 200 g = 0.2 kg

Force (F) = 0.2 kg × 0.0333 m/s^2 = 0.00666 N

So, the force acting on the body with a mass of 200 g, moving from rest with a speed of 36 km/h for 5 minutes, is approximately 0.00666 N.