The lift descends evenly at a speed of 3m / s. The force of the weight of a person in the elevator
| June 25, 2021 | education
The lift descends evenly at a speed of 3m / s. The force of the weight of a person in the elevator is 320N. What is the mass of a person?
Initial data: the movement of the elevator is uniform; V (elevator speed) = 3 m / s; P (weight of a person in a descending elevator) = 320 N.
Reference data: g (acceleration due to gravity) ≈ 10 m / s2.
Since the movement of the elevator is uniform, the mass of a person can be determined by the formula (for accelerated movement, the formula has the form: P = (g ± a)): P = m * g, whence m = P / g.
Calculation: m = 320/10 = 32 kg.
Answer: The mass of a person is 32 kilograms.
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