Question

Найдите массу камня, который подбросили вверх, если в момент, когда он достигает высоты 10 м его потенциальная энергия равна 10 Дж. Ответ дать в кг. Ускорение свободного падения принять равным 10 м/с^2.

Answer 1

Ответ:

дано:

h=10м

Епот=10Дж

g=10м/с2

m-?

решение:

Епот=mgh=>m=Епот/gh

m=10/10×10=0,1кг

Ответ:Масса камня равна 0,1кг

Answer 2

Calculation of the Mass of the Stone

To find the mass of the stone that was thrown upwards, we can use the principle of conservation of energy. The potential energy of the stone at a height of 10 m is given as 10 J. We can equate this potential energy to the gravitational potential energy of the stone at that height.

The gravitational potential energy (PE) of an object near the surface of the Earth is given by the formula:

PE = mgh

Where: - m is the mass of the object - g is the acceleration due to gravity (taken as 10 m/s^2) - h is the height of the object

In this case, we have the potential energy (PE) as 10 J and the height (h) as 10 m. We can rearrange the formula to solve for the mass (m):

m = PE / (gh)

Substituting the given values:

m = 10 J / (10 m/s^2 * 10 m)

Simplifying the equation:

m = 0.1 kg

Therefore, the mass of the stone that was thrown upwards is 0.1 kg.