- #1
Soaring Crane
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A 910 N man stands on a scale in an elevator that is accelerating downward 1.5 m/s^2. What does the scale read in N? If the elevator moves down with max. acceleration, what will the scale read?
I started to do this:
F = ma
910 N = m(9.8 m/s^2)
m = 92.86 kg
mg - F_s = ma
910 N - F_s = 92.86 kg*(-1.5 m/s^2)
F_s = 139.29 N + 910 N = 1049.29 N
But if the acc. is downward, wouldn't the scale have a reading that is < 910?
I also don't understand the second part. What is the maximum acc.?
Please correct me on my mistakes and help me on the second part. Thanks.
I started to do this:
F = ma
910 N = m(9.8 m/s^2)
m = 92.86 kg
mg - F_s = ma
910 N - F_s = 92.86 kg*(-1.5 m/s^2)
F_s = 139.29 N + 910 N = 1049.29 N
But if the acc. is downward, wouldn't the scale have a reading that is < 910?
I also don't understand the second part. What is the maximum acc.?
Please correct me on my mistakes and help me on the second part. Thanks.