The potential energy of a body at a height of 40 cm is 8 J. What is the mass of this body?
| July 2, 2021 | education
These tasks: h (height at which the body under consideration is located) = 40 cm (0.4 m); Ep (potential energy of a body at a given height) = 8 J.
Reference values: g (acceleration due to gravity) ≈ 10 m / s2.
The mass of the body under consideration can be expressed from the calculation formula for the potential energy: En = m * g * h, whence m = En / (g * h).
Calculation: m = 8 / (10 * 0.4) = 2 kg.
Answer: The body in question has a mass of 2 kilograms.
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