An elevator with a person moves vertically upward with an acceleration of 0.25 m / s2.
| June 16, 2021 | education
An elevator with a person moves vertically upward with an acceleration of 0.25 m / s2. If the weight of a person in an elevator is 758.5 N, then the weight of a person is?
A person’s weight can be calculated using the formula:
P = mg + ma = m (g + a), where P is the weight of a person in the elevator (P = 758.5 N), m is the weight of a person (kg), g is the acceleration of gravity (we take g = 10 m / s ^ 2), a is the acceleration of an elevator with a person (a = 0.25 m / s ^ 2).
Let’s express and calculate the mass of a person:
m = P / (g + a) = 758.5 / (10 + 0.25) = 758.5 / 10.25 = 74 kg.
Answer: The mass of a person is 74 kg.
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