Question

Тело поднимается по наклонной плоскости силой 15Н.Вес 18Н,высота плоскости 5м,длина 10м. Найдите КПД наклонной плоскости (%) Главное с решением пожалуйста ​

Answer 1

Ответ:

см. на фото.............

Answer 2

Calculation of Efficiency of Inclined Plane

To calculate the efficiency of an inclined plane, we need to know the input work and the output work. In this case, the input work is the work done by the applied force, and the output work is the work done against gravity.

Given: - Applied force (F) = 15 N - Weight (W) = 18 N - Height of the inclined plane (h) = 5 m - Length of the inclined plane (l) = 10 m

To find the input work, we can use the formula:

Input work (W_in) = Force (F) × Distance (d)

In this case, the distance is the length of the inclined plane (l). Therefore:

W_in = F × l

Substituting the given values:

W_in = 15 N × 10 m = 150 N·m

To find the output work, we can use the formula:

Output work (W_out) = Weight (W) × Height (h)

Substituting the given values:

W_out = 18 N × 5 m = 90 N·m

The efficiency (η) of the inclined plane can be calculated using the formula:

Efficiency (η) = (Output work / Input work) × 100%

Substituting the calculated values:

η = (90 N·m / 150 N·m) × 100%

Simplifying the expression:

η = 0.6 × 100% = 60%

Therefore, the efficiency of the inclined plane is 60%.

Please note that the efficiency of the inclined plane is calculated based on the assumption that there is no energy loss due to friction or other factors.