A Raffonian standing on a scale in an elevator accelerating upwards at 1.3m/s2 reads 424N. What is the mass of the Raffonian?

Answer 1

Tiffany M.,

Force exerted by the elevator must overcome weight and then produce an upward acceleration.

Net force = mg + ma

424N = 9.81•m + 1.3m

424/(9.81+1.3) = m

38.16kg (38 kg correct to 2 sig. fig.)

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Mr. A