Problem 1: A 1000.0 kg elevator is controlled with a cable. Friction and air resistance can...
Problem 1: A 1000.0 kg elevator is controlled with a cable. Friction and air resistance can be ignored. In this problem, the elevator is already moving downward at a constant speed of 1.0 m/s. During this initial stage, the elevator moves with this constant speed for 1.5 seconds. Then, in a 2nd stage, the elevator slows down to a stop with constant acceleration. During this 2nd stage, it takes 0.5 seconds of time to come to a stop.
A. Draw a motion diagram that clearly shows both the velocity vectors and the acceleration vectors. Use dashed lined to separate the two stages.
B. Draw a velocity vs. time graph for this situation. Separate the two stages of motion with a dashed line.
C. What is the value of the acceleration during each stage? [Separate answer for each stage]
D. Draw two separate free-body diagrams–one for each stage of the motion. Next to your free body diagram, draw a separate vector that represents that the net force acting on the elevator.
E. Determine the value of the weight force exerted on the elevator by the earth?
F. Determine the value of the tension force in each stage? [Hint: You may find it useful to first calculate the value of the net force for each stage].
Homework Answers
Add Answer to:
Problem 1: A 1000.0 kg elevator is controlled with a cable.
Friction and air resistance can...
Need this answered ASAP!!! 5. A person of mass 70 kg, is descending in an elevator...
Need this answered ASAP!!!
5. A person of mass 70 kg, is descending in an elevator at a constant velocity of 4.0 m/s. At 10 seconds, the elevator starts to slow to a stop at the rate of 1.0 m/s2 a) Draw a Free Body Diagram for the person in the elevator as it descends at (a) constant speed and (b) during its period of acceleration. a) Constant Speed b) Acceleration b) The man in the elevator is standing on...
A 2.0 kg ball hangs in an elevator as shown. The elevator has a downward acceleration...
A 2.0 kg ball hangs in an elevator as shown. The elevator has a downward acceleration of 2.5 A. Draw a free body diagram for the ball. In your diagram, draw the vectors to scale. (For example, a 2N force vector should be twice as long as a 1N force vector.) 60* 90 B. what is the total force on the ball? 772 a2.5 C. Find the tension force in each of the two ropes. D. How would the tension...
Please help me solve questions 6 6) A 50 kg person on a scale is in an elevator. The elevator is at rest for 3 seconds. Then it takes 0.8 seconds to accelerate to 6 m/s moving down. It moves el...
Please help me solve questions 6
6) A 50 kg person on a scale is in an elevator. The elevator is at rest for 3 seconds. Then it takes 0.8 seconds to accelerate to 6 m/s moving down. It moves elevator then takes 1.2 seconds to slow to a stop. at this speed for 5 seconds. The 6a) Draw an FBD of the situation during both of the accelerations. 42 What is the acceleration of the person during the first...
4 4. An 80-kg man stands in an elevator. What is his apparent weight when 1)...
4
4. An 80-kg man stands in an elevator. What is his apparent weight when 1) the elevators stationary, IT) the elevator accelerates up at 2 m/s?. III) the elevator accelerates down at 2 m/s IV) the elevator cruises up at constant velocity of 1 m/s. A) Draw a free body diagram of the man labeling the two forces (n and weight) acting on him. B) Write Newton's 2nd law, just including the vertical components. C) Put the forces n...
2. MP HW P2.58 (Refer to example 2.10, p47) A hotel elevator ascends 200m with maximum...
2. MP HW P2.58 (Refer to example 2.10, p47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s a. How far does the elevator move while accelerating to full speed from rest? b. How long does it take to make the complete trip from bottom to top? A) i) Draw a motion diagram and show the velocity vectors and the acceleration vectors on the motion diagram; ii) Shovw the...
(13.1) An elevator riding in a frictionless vertical shaft has total mass of 1000 kg. (a)...
(13.1) An elevator riding in a frictionless vertical shaft has total mass of 1000 kg. (a) The elevator cable exerts a force of 9000 N in the upward direction on the elevator. Determine (i) the acceleration of the elevator, and (ii) how long it takes for the elevator, starting from rest, to attain a speed of 5 m/s. (b) The cable exerts a force of 12000 N [up] on the elevator. Determine (i) the acceleration of the elevator, and (ii)...
1. A 200 kg crate is pushed across a floor by a force F = 250...
1. A 200 kg crate is pushed across a floor by a force F = 250 newtons at an angle 0 = 53 below horizontal. The floor exerts a 50 newton frictional force on the crate opposing the motion. a. Draw a labeled free body diagram showing the forces acting on the trunk. (+2) b. Below, write Newtons's 2nd Law (F = må) in the horizontal (x) and vertical (v) direction, using the names of the forces from your free...
A hotel elevator ascends 200 m with a maximum speed of 5.0 m/s. Its acceleration and...
A hotel elevator ascends 200 m
with a maximum speed of 5.0 m/s. Its acceleration and deceleration
both have a magnitude of 1.0 m/s2. How far does the
elevator move while accelerating to full speed from rest? how long
does it take to make the complete trip from bottom to top?
2. MP HW P2.58 (Refer to example 2.10, p.47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s...
Mech Newton's second and third laws HW-40 2. Two crates, A and B, are in an...
Mech Newton's second and third laws HW-40 2. Two crates, A and B, are in an elevator as shown. The mass of crate A is Cable greater than the mass of crate B. a. The elevator moves downward at constant speed. Elevator i. How does the acceleration of crate A compare to that of crate B? Explain. A MA Constant ii. In the spaces provided below, draw and label separate free-body speed diagrams for the crates. Free-body diagram for Free-body...
Constants Part A A 2045 kg elevator with broken cables is falling at 4.60 m/s when...
Constants Part A A 2045 kg elevator with broken cables is falling at 4.60 m/s when it first contacts a cushioning spring at the bottom of the shaft. The spring is supposed to stop the elevator, compressing by 2.80 m as it stops. During the motion a safety clamp applies a constant 1.64x104 N_frictional force to the elevator What is the spring constant of the spring that stops the elevator? Value Units Request Answer Submit Part B What is the...
Need this answered ASAP!!!
5. A person of mass 70 kg, is descending in an elevator at a constant velocity of 4.0 m/s. At 10 seconds, the elevator starts to slow to a stop at the rate of 1.0 m/s2 a) Draw a Free Body Diagram for the person in the elevator as it descends at (a) constant speed and (b) during its period of acceleration. a) Constant Speed b) Acceleration b) The man in the elevator is standing on...
A 2.0 kg ball hangs in an elevator as shown. The elevator has a downward acceleration of 2.5 A. Draw a free body diagram for the ball. In your diagram, draw the vectors to scale. (For example, a 2N force vector should be twice as long as a 1N force vector.) 60* 90 B. what is the total force on the ball? 772 a2.5 C. Find the tension force in each of the two ropes. D. How would the tension...
Please help me solve questions 6
6) A 50 kg person on a scale is in an elevator. The elevator is at rest for 3 seconds. Then it takes 0.8 seconds to accelerate to 6 m/s moving down. It moves elevator then takes 1.2 seconds to slow to a stop. at this speed for 5 seconds. The 6a) Draw an FBD of the situation during both of the accelerations. 42 What is the acceleration of the person during the first...
4
4. An 80-kg man stands in an elevator. What is his apparent weight when 1) the elevators stationary, IT) the elevator accelerates up at 2 m/s?. III) the elevator accelerates down at 2 m/s IV) the elevator cruises up at constant velocity of 1 m/s. A) Draw a free body diagram of the man labeling the two forces (n and weight) acting on him. B) Write Newton's 2nd law, just including the vertical components. C) Put the forces n...
2. MP HW P2.58 (Refer to example 2.10, p47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s a. How far does the elevator move while accelerating to full speed from rest? b. How long does it take to make the complete trip from bottom to top? A) i) Draw a motion diagram and show the velocity vectors and the acceleration vectors on the motion diagram; ii) Shovw the...
1. A 200 kg crate is pushed across a floor by a force F = 250 newtons at an angle 0 = 53 below horizontal. The floor exerts a 50 newton frictional force on the crate opposing the motion. a. Draw a labeled free body diagram showing the forces acting on the trunk. (+2) b. Below, write Newtons's 2nd Law (F = må) in the horizontal (x) and vertical (v) direction, using the names of the forces from your free...
A hotel elevator ascends 200 m
with a maximum speed of 5.0 m/s. Its acceleration and deceleration
both have a magnitude of 1.0 m/s2. How far does the
elevator move while accelerating to full speed from rest? how long
does it take to make the complete trip from bottom to top?
2. MP HW P2.58 (Refer to example 2.10, p.47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s...
Mech Newton's second and third laws HW-40 2. Two crates, A and B, are in an elevator as shown. The mass of crate A is Cable greater than the mass of crate B. a. The elevator moves downward at constant speed. Elevator i. How does the acceleration of crate A compare to that of crate B? Explain. A MA Constant ii. In the spaces provided below, draw and label separate free-body speed diagrams for the crates. Free-body diagram for Free-body...
Constants Part A A 2045 kg elevator with broken cables is falling at 4.60 m/s when it first contacts a cushioning spring at the bottom of the shaft. The spring is supposed to stop the elevator, compressing by 2.80 m as it stops. During the motion a safety clamp applies a constant 1.64x104 N_frictional force to the elevator What is the spring constant of the spring that stops the elevator? Value Units Request Answer Submit Part B What is the...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago