16. (15points) A64-kg woman lives at the top of a tall building and is riding an

Question

16. (15points) A64-kg woman lives at the top of a tall building and is riding an elevator to the bottom flo standing on a bathroom scale. (a) The elevator begins accelerating downward at 1.3 m's. What would the bathroom scale rea "weight" of the woman? a. 438 N b. 544 N c, 627 N d.678 N e, 818 N (b) After a few moments the elevator stops accelerating and continues downward at a cor What would the bathroom scale read now? a. 438 N b. 544 N c. 627 N d. 678 N e. 818 N (c) At the end of the trip, the elevator slows down by having an upward acclerati d 678 N e. 8181

Explanation / Answer

16] Acceleration is downwards and is equal to

a = 1.3 m/s2

so, net force on the woman

Fnet = mg - R = ma

= R = m[g - a] = 64[9.8 - 1.3] = 544 N

this is the weight which the scale will read.[answer - b]

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