1. You are standing on a scale inside an elevator. The scale reads 61 percent of
ID: 2139738 • Letter: 1
Question
1. You are standing on a scale inside an elevator. The scale reads 61 percent of your weight. What is the acceleration of the elevator? (Define positive y upward)
2. You are standing on a scale inside an elevator. The scale reads 21 percent less than your weight. What is the acceleration of the elevator? (Define positive y upward.)
3.You are standing on a scale inside an elevator. The scale reads 117 percent of your weight. What is the acceleration of the elevator? (Define positive y upward.)
4. You are standing on a scale inside an elevator. The scale reads 11 percent more than your weight. What is the acceleration of the elevator? (Define positive y upward.)
Explanation / Answer
1)N=mg-ma.....
accelaration a=(mg-N)/m....
here N is 61*mg/100...
a=3.822 m/s^2....
2) here N=(100-21)*mg/100...=79*mg/100...
N=mg-ma.....
accelaration a=(mg-N)/m...
a=0.21*9.8=2.058m/s^2...
3)here N=117*mg/100...
N=mg+ma.....
accelaration a=(N-mg)/m...
a=.17*9.8=1.67m/s^2...
4)here N=(100+11)*mg/100...
N=mg+ma.....
accelaration a=(N-mg)/m...
a=.11*9.8=1.078m/s^2...
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