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An elevator moves downward while slowing down. This means that the acceleration of the elevator is in upward direction. From Newton second law, Fnet = Ma. Hence, net force on elevator also acts in upward direction.
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Question 5 (3 points) An elevator moves downward while slowing down. What is the direction of...
_________An elevator suspended by a vertical cable is moving downward but slowing down. The tension in...
_________An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the cable must be A) greater than the weight of the elevator. B) less than the weight of the elevator. C) equal to the weight of the elevator. ______ A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be A) equal to the weight of the bucket. B) greater than the weight...
You are in your favorite elevator, coming to a stop as you go from the ground...
You are in your favorite elevator, coming to a stop as you go from the ground floor to the 4th floor. a) What forces are acting on you as you are coming to a stop in the elevator? Normal force upward and Force of gravity upward Normal force downward and Force of gravity upward Normal force downward and Force of gravity downward Normal force upward and Force of gravity downward Just the Force of gravity downward b) As you are...
V. ELEVATOR REVIEW A man stands on a scale in an elevator. The elevator moves downwards...
V. ELEVATOR REVIEW A man stands on a scale in an elevator. The elevator moves downwards at a velocity of 10 m/s. The elevator accelerates “pwards at a rate of 5 m/s.. The scale under the man reads 180 lbs. A. Is the elevator slowing down or speeding up? B. Given that 1 pound 4.5 Newtons, compute the man's mass? HINT: normal force is not necessarily cqual to weight. You have to usc NII C. The elevator reaches a complete...
A block slides up an inclined plane while slowing down as it moves. Which of the...
A block slides up an inclined plane while slowing down as it moves. Which of the following statements about the friction force must be true? The friction force is greater than the gravity force. The friction force is greater than the normal force. The friction force is greater than the component of the gravity force parallel to the ramp. The friction force is greater than the component of the gravity force perpendicular to the ramp.
2) Rita is in an elevator that is moving at a constant velocity downward. If the...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
A single mass (m1 = 4.4 kg) hangs from a spring in a motionless elevator.
A single mass (m1 = 4.4 kg) hangs from a spring in a motionless elevator. The spring constant is k = 270 N/m. 1) What is the distance the spring is stretched from its unstretched length? 2) Now, three masses (m1 = 4.4 kg, m2 = 13.2 kg and m3 = 8.8) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. What is the magnitude of the force the bottom spring exerts on the...
A single mass (m1 = 4.3 kg) hangs from a spring in a motionless elevator. The...
A single mass (m1 = 4.3 kg) hangs from a spring in a motionless elevator. The spring constant is k = 266 N/m. 1) What is the distance the spring is stretched from its unstretched length? 2) Now, three masses (m1 = 4.3 kg, m2 = 12.9 kg and m3 = 8.6) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. What is the magnitude of the force the bottom...
012 10.0 points A person weighing 0.7 kN rides in an elevator that has a downward...
012 10.0 points A person weighing 0.7 kN rides in an elevator that has a downward acceleration of 2.5 m/s2. The acceleration of gravity is 9.8 m/s2 What is the magnitude of the force of the 它自 35 PM ort sc delete homen ro 6 + backspace ock 8 4 pause elevator floor on the person? Answer in units of kN 013 (part 1 of 2) 0.0 points A 4.1 kg object is suspended by a string from the ceiling...
Question 1 3 pt James weighs 81.0 kg. He is standing in an elevator on a...
Question 1 3 pt James weighs 81.0 kg. He is standing in an elevator on a scale. The elevator moving downward but slowing down (decelerating) with a magnitude of acceleration of 2.10 m/s2. What is the scale reading (in kg) during the motion of the elevator? (Round your answer to 3 significant figures)
The brakes are applied to a moving van, causing it to uniformly slow down. While slowing,...
The brakes are applied to a moving van, causing it to uniformly slow down. While slowing, it moves a distance of 40.0 m in 7.90 s to a final velocity of 2.00 m/s, at which point the brakes are released. (a) What was its initial speed (in m/s), just before the brakes were applied? m/s (b) What was its acceleration (in m/s2) while the brakes were applied? (Assume the initial direction of motion is the positive direction. Indicate the direction...
_________An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the cable must be A) greater than the weight of the elevator. B) less than the weight of the elevator. C) equal to the weight of the elevator. ______ A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be A) equal to the weight of the bucket. B) greater than the weight...
V. ELEVATOR REVIEW A man stands on a scale in an elevator. The elevator moves downwards at a velocity of 10 m/s. The elevator accelerates “pwards at a rate of 5 m/s.. The scale under the man reads 180 lbs. A. Is the elevator slowing down or speeding up? B. Given that 1 pound 4.5 Newtons, compute the man's mass? HINT: normal force is not necessarily cqual to weight. You have to usc NII C. The elevator reaches a complete...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
012 10.0 points A person weighing 0.7 kN rides in an elevator that has a downward acceleration of 2.5 m/s2. The acceleration of gravity is 9.8 m/s2 What is the magnitude of the force of the 它自 35 PM ort sc delete homen ro 6 + backspace ock 8 4 pause elevator floor on the person? Answer in units of kN 013 (part 1 of 2) 0.0 points A 4.1 kg object is suspended by a string from the ceiling...
Question 1 3 pt James weighs 81.0 kg. He is standing in an elevator on a scale. The elevator moving downward but slowing down (decelerating) with a magnitude of acceleration of 2.10 m/s2. What is the scale reading (in kg) during the motion of the elevator? (Round your answer to 3 significant figures)
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