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A manwhose mass is80kg on a spring weighing machine inside an elevator.what is the reading of weighing machine when (a)tThe elevator start to ascend with an accelaration 2.0m/s2?.

(b)the elevator is moving with a uniform velocity.
(c)the elevator is coming to rest with a retardation of 4.0m/s2?.

(a) m (g+2.0)

(b) m g
(c) m (g-4.0)

96 0 48

Did you know?

Did you know that the reading on a weighing machine can change depending on the acceleration or velocity of an elevator? For instance, if a man with a mass of 80kg is inside an elevator on a spring weighing machine, the reading will be different in different scenarios. (a) When the elevator starts to ascend with an acceleration of 2.0m/s^2, the reading on the weighing machine will be slightly higher than the man's actual mass due to the upward force experienced by the man. (b) When the elevator is moving with a uniform velocity, the reading on the weighing machine will be equal to the man's actual mass since there is no net force acting on him. (c) When the elevator is coming to rest with a retardation of 4.0m/s^2, the reading on the weighing machine will be slightly lower than the man's actual mass due to the downward force experienced by the man. This demonstrates how the motion of the elevator can affect the reading on a weighing machine.