A man is standing on a scale inside an elevator in Flushing, NY. His weight is...
A man is standing on a scale inside an elevator in Flushing, NY.
His weight is 800
N (kg m s-2) when the elevator is still. What is the reading of his
weight on the scale, in N
(kg m s-2) when the elevator is accelerating UPWARD at acceleration
a = (0.5) g
Homework Answers
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A man is standing on a scale inside an elevator in Flushing, NY.
His weight is...
E. Suppose you are standing on the scale in the elevator and the elevator is accelerating...
E. Suppose you are standing on the scale in the elevator and the
elevator is accelerating downward with
an acceleration smaller than 9.8 m/s2
i. Draw free-body diagrams of yourself, the scale, and the floor
of the elevator where it interacts
with the scale.
ii. How must the magnitude of the force exerted by the scale on
you compare with your own
weight?
iii. How must the reading on the scale compare with the reading
you make when the elevator...
2. A man is standing on a scale that reads out his apparent weight in Newtons...
2. A man is standing on a scale that reads out his apparent weight in Newtons in an accelerating elevator. If the scale reads that he weighs 1200N while the elevator is accelerating and his mass is 79kg, what is the acceleration of the elevator? (Up is positive) a. 4.7 m/s b. -5.4 m/s c. +5.4 m/s? d. -9.8 m/s e. +4.7 m/s? f. O m/s2
A man is standing on a scale inside an elevator. As the elevator starts to go...
A man is standing on a scale inside an elevator. As the elevator starts to go up with an acceleration a, the scale reads 832 N. The mass of the man is m = 60 kg. (a) Which of the free body diagrams below displays all the forces acting on the man with the correct relative magnitudes and directions?
A person who normally weighs 250 pounds is standing on a scale inside an elevator. The...
A person who normally weighs 250 pounds is standing on a scale inside an elevator. The elevator is moving upward with a speed of 7 m/s and then begins to decelerate at a rate of 5 m/s2(0.5 g). What is the reading on the scale before the elevator begins to decelerate? What is the reading on the scale during the deceleration?
A 60 kg man standing on a scale in an elevator moving up at 2 m/s...
A 60 kg man standing on a scale in an elevator moving up at 2 m/s ^2 , what is his weight? What is his weight when the elevator is moving down at 3 m/s^2? What is his weight when the elevator is moving at a constant speed of 2 m/s?
You are standing on a bathroom scale inside an elevator. Your weight (as measured on a...
You are standing on a bathroom scale inside an elevator. Your weight (as measured on a bathroom scale under ordinary conditions) is 168.3 lb, but reading on the scale is 146.5 lb. What is the y-component of the acceleration?
You are standing on a bathroom scale and you measure the weight to be 120 lb....
You are standing on a bathroom scale and you measure the weight to be 120 lb. You then take the scale onto an elevator and stand on the scale as the elevator accelerates, during which the reading on the scale decreases to 90 lb. Which of the following statements about the elevator could be true? A. The elevator is moving upward at 2 m/s while accelerating downward at 2.45 m/s^2. B. The elevator is moving downward at 4 m/s while...
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A man stands on a scale in an elevator that has an upward acceleration a. The...
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A 86.8-kg person stands on a scale in an elevator. What is the apparent weight when...
A 86.8-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.72 m/s2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1.67 m/s2? (a) Number Units (b) Number Units (c) Number Units
E. Suppose you are standing on the scale in the elevator and the
elevator is accelerating downward with
an acceleration smaller than 9.8 m/s2
i. Draw free-body diagrams of yourself, the scale, and the floor
of the elevator where it interacts
with the scale.
ii. How must the magnitude of the force exerted by the scale on
you compare with your own
weight?
iii. How must the reading on the scale compare with the reading
you make when the elevator...
2. A man is standing on a scale that reads out his apparent weight in Newtons in an accelerating elevator. If the scale reads that he weighs 1200N while the elevator is accelerating and his mass is 79kg, what is the acceleration of the elevator? (Up is positive) a. 4.7 m/s b. -5.4 m/s c. +5.4 m/s? d. -9.8 m/s e. +4.7 m/s? f. O m/s2
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