Analyze the provided image and extract the key instructions and concepts related to physics experiments.

This document outlines a physics experiment focused on understanding inclined planes and efficiency.

Instructions for the Experiment:

1. Determine the weight of the object (Р бруска) using a dynamometer.
2. Process measurement results: Record results of direct measurements, including absolute error (equal to the smallest scale division of the instrument), and calculations without considering error, in Table 20.
3. Set up the experiment according to Figure 200.
4. Measure the height (h) and length (l) of the inclined plane.
5. Calculate the useful work done using the formula: \( A_{\text{n}} = P \times h \)
6. Move the object at a constant speed up the inclined plane, applying force parallel to the plane.
7. Measure the pulling force (F) during the object's movement.
8. Calculate the work done (work to lift the object to height h along the inclined plane) using the formula: \( A_{3} = F \times l \)
9. Determine the efficiency (КПД) of the inclined plane using the formula: \( \eta = \frac{A_{\text{n}}}{A_{3}} \times 100\% \)
10. Analyze the results and draw a conclusion.

Table 20 Headers:

• \( P \pm \Delta P, \text{ H} \)
• \( h \pm \Delta h, \text{ m} \)
• \( A_{\text{n}}, \text{ Дж} \)
• \( F \pm \Delta F, \text{ H} \)
• \( l \pm \Delta l, \text{ m} \)
• \( A_{3}, \text{ Дж} \)
• \( \eta, \% \)