A person weighs 150 pounds. He is standing on a scale in an elevator and stands on a scale. The elevator is accelerating upwards at a rate of 10 m/s/s, what is the reading of the scale?
150 pounds
about 75 pounds
about 300 pounds
not enough info
2 answers
Would it be 300 pounds?
F = m a
150 lbs = 68 kg
Fscale up - m g down = m a
Fscale up = m g + m a
= 150 pounds + 68* 10 newtons
= 150 pounds + 680 Newtons
680 Newtons = 153 pounds
so 150 + 153 is about 300 pounds
150 lbs = 68 kg
Fscale up - m g down = m a
Fscale up = m g + m a
= 150 pounds + 68* 10 newtons
= 150 pounds + 680 Newtons
680 Newtons = 153 pounds
so 150 + 153 is about 300 pounds
7 answers