Question

Assume that while ascending, an elevator has the same magnitude of acceleration "a" during starting (accelerating) and stopping (decelerating). A person stands on a scale in that elevator, and hence pushes downwards on the scale. The scale also reacts with an upward normal force. The maximum and minimum scale readings are Nace = 600 N and N dec = 400 N, respectively. acceleration of gravity equal to 10m/s2 and neglect the air's resistance. (a) Find the person's weight and mass. (b) Find the magnitude of the elevator's acceleration. The free body diagrams respect to the ground are given below. fe Nous Wha mg mo Starring period Stopping period

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Answer 1

matma 60] را). from oqh i ha Nace = = 600 [ matung = 600 matung and (mg-ma= 900 900] -(0) 2 my soky Answer ma وا Ndoc = mg ama a ) = 1000 m ) W = ang soon Insuler b) soat soo = 60o Soa 10o a ul 2 m/s2 Answer. CS scanned with Cam Scanner