Question

Игрушечную машинку тянут за веревку под углом 45 градусов к земле. Вычисли горизонтальную проекцию силы тяги, если машинку тянут с силой 40 N.

Answer 1

Ответ на фото
должно быть так

Answer 2

Calculating the Horizontal Projection of the Pulling Force

To calculate the horizontal projection of the pulling force when the toy car is pulled at a 45-degree angle to the ground with a force of 40 N, we can use trigonometric principles.

The horizontal projection of the force can be calculated using the formula: F_horizontal = F * cos(θ)

Where: - F = 40 N (the pulling force) - θ = 45 degrees (the angle with the ground)

Substituting these values into the formula: F_horizontal = 40 N * cos(45°)

Calculation

F_horizontal = 40 N * cos(45°)

Using the trigonometric function: F_horizontal ≈ 40 N * 0.7071 ≈ 28.28 N

So, the horizontal projection of the pulling force is approximately 28.28 N.