Question

Определите массу груза, у которого при свободном падении за 1 с потенциальная энергия изменилась на 49 Дж. Пожалуйста помогите, если можно то с решением.

Answer 1

смотри фото ............................

Answer 2

Масса груза приблизительно 1 кг

 

 

Answer 3

Calculation of the Mass of the Load

To determine the mass of the load, we can use the equation for potential energy:

Potential Energy (PE) = mass (m) * acceleration due to gravity (g) * height (h)

In this case, the potential energy change is given as 49 J, and the time taken for the free fall is 1 s. We can assume that the height is the distance traveled during this time.

Since the load is in free fall, we can use the equation for distance traveled during free fall:

Distance (d) = (1/2) * acceleration due to gravity (g) * time (t)^2

We can rearrange this equation to solve for the acceleration due to gravity:

g = (2 * d) / (t^2)

Substituting this value of g into the equation for potential energy, we get:

PE = m * [(2 * d) / (t^2)] * h

Simplifying the equation, we can solve for the mass (m):

m = PE / [(2 * d) / (t^2)] * h

Now, let's substitute the given values into the equation to find the mass of the load.

Given: - Potential energy change (PE) = 49 J - Time (t) = 1 s

We need to find the height (h) and the distance (d) traveled during this time.

Unfortunately, the search results provided do not contain the necessary information to calculate the height or distance. Therefore, without additional information, it is not possible to determine the mass of the load.