Question

8. До однієї точки тіла прикладені дві сили і діють вони вздовж однієї прямої. Одна із сил 5Н, а рівнодійна 7Н визначте, якою може бути друга сила.​

Answer 1

Відповідь:

1. F2=7+5=12H

2. F5=7-2H

Пояснення:

Answer 2

Problem Analysis

In this problem, we are given that two forces are acting on a body along the same straight line. One of the forces is 5N, and the resultant force is 7N. We need to determine the magnitude of the second force.

Solution

To solve this problem, we can use the concept of vector addition. The resultant force is the sum of the two forces acting on the body.

Let's assume the magnitude of the second force is F2.

According to the problem, the first force is 5N, and the resultant force is 7N. We can represent these forces as vectors:

F1 = 5N (given)

R = 7N (given)

The resultant force R can be expressed as the sum of the two forces F1 and F2:

R = F1 + F2

Since the forces are acting along the same straight line, we can represent them as positive or negative values depending on their direction. Let's assume that the direction of F1 is positive.

Therefore, we can rewrite the equation as:

7N = 5N + F2

To find the magnitude of F2, we can rearrange the equation:

F2 = 7N - 5N

Simplifying the equation:

F2 = 2N

Therefore, the magnitude of the second force can be 2N.

Answer

The magnitude of the second force can be 2N.