Question

Тило масою 400 грам перебувае на висоти 2 м над ривнем пидлоги.Визначте потенциальну енергию цього тила

Answer 1

Дано:
m=400 г=4 кг
h=2 м
Еп.-? 

Еп.=mgh
[Еп.]=кг*Н/м (в квадрате) * м=Н*м= Дж.
Еп.=4*2*10=80Дж.

Answer 2

Calculation of Potential Energy

To calculate the potential energy of an object, we need to know its mass (m), the acceleration due to gravity (g), and the height (h) at which it is located. In this case, we are given that the mass of the object is 400 grams and it is located at a height of 2 meters above the ground.

The formula to calculate potential energy is:

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

Let's plug in the given values:

Mass (m) = 400 grams = 0.4 kilograms (1 kilogram = 1000 grams) Acceleration due to gravity (g) = 9.8 m/s^2 (approximately) Height (h) = 2 meters

Using the formula, we can calculate the potential energy:

PE = 0.4 kg * 9.8 m/s^2 * 2 m

Calculating this expression, we find:

PE = 7.84 Joules

Therefore, the potential energy of the object is 7.84 Joules when it is located at a height of 2 meters above the ground.