An elevator car has two equal masses attached to the ceiling as shown. (Assume m = 4.10 kg.) (a) The elevator ascends with an acceleration of magnitude 1.70 m/s², what are the tensions in the two strings? (Enter your answers in N.) T, = 108 24 Draw free-body diagrams for each mass. What forces act on each mass? What are the directions of the forces due to each rope on the upper mass? How are the forces that the lower rope exerts on the mass. You might find it easier to solve for T, first, then use your result when solving for T,. N T2 - 54.12 Draw free-body diagrams for each mass. What forces act on each mass? What are the directions of the forces due to each rope on the upper mass? How are the forces that the lower rope exerts on the mass. You might find it easier to solve for T, first, then use your result when solving for T. N (b) The maximum tension the strings can withstand is 101.2 N. What is the maximum acceleration of the elevator so that a string does not break? (Enter the magnitude in m/s².) 1.27 Note that the tension is greater in the upper string, so this string will break first. Find a when T; = Tmax" m/s?

An elevator car has two equal masses attached to the ceiling as shown. (Assume m = 4.10 kg.) (a) The elevator ascends with an acceleration of magnitude 1.70 m/s², what are the tensions in the two strings? (Enter your answers in N.) T, = 108 24 Draw free-body diagrams for each mass. What forces act on each mass? What are the directions of the forces due to each rope on the upper mass? How are the forces that the lower rope exerts on the mass. You might find it easier to solve for T, first, then use your result when solving for T,. N T2 - 54.12 Draw free-body diagrams for each mass. What forces act on each mass? What are the directions of the forces due to each rope on the upper mass? How are the forces that the lower rope exerts on the mass. You might find it easier to solve for T, first, then use your result when solving for T. N (b) The maximum tension the strings can withstand is 101.2 N. What is the maximum acceleration of the elevator so that a string does not break? (Enter the magnitude in m/s².) 1.27 Note that the tension is greater in the upper string, so this string will break first. Find a when T; = Tmax" m/s?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 37P: An elevator filled with passengers has a mass of 1.70103kg . (a) The elevator accelerates upward...

See similar textbooks

Similar questions

please answer the following A jet aircraft with a mass of 4,525 kg has an engine that exerts a force (thrust) equal to 60,400 N. (a) What is the jet's acceleration when it takes off? (Give the magnitude.)? m/s2(b)What is the jet's speed after it accelerates for 9 s? (Assume it starts from rest.)? m/s(c) How far does the jet travel during the 9 s?? m
A single-celled animal called a paramecium propels itself quite rapidly through water using its hair-like cilia. A certain paramecium experiences a drag force of ?drag=−??2 in water, where the drag coefficient ? is approximately 0.330 kg/m . If the paramecium's speed ? is 0.000137 m/s , what is the magnitude of the propulsion force that the creature must generate to move at this constant speed?
Drawing Free-Body Diagrams In completing the solution for a problem involving forces, what do we do after constructing the tree-body diagram? That is, what do we apply?
An elevator filled with passengers has a mass of 1.70103kg . (a) The elevator accelerates upward from rest at a rate of 1.20m/s2for 1.50 s. Calculate the tension in the cable supporting the elevator. (b) The elevator continues upward at constant velocity for 8.50 s. What is the tension in the cable during this time? (c) The elevator decelerates at a rate of 0.600 in/s2 for 0.600m/s2 3.00 s. What is the tension in the cable during deceleration? (d) How high has the elevator moved above its original starting point, and what is its final velocity?
A 75 kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 825 N. What is the acceleration of the elevator?
A (6 kg) block rests on a smooth table. It is connected by a string of negligible mass to a (2 kg) block hanging over the end of the table, as shown in figure below. Find: (&) The acceleration of each block? Answer : (a=2.45 m/s*) (b) The tension in the connecting string? Answer: (T=147N) (@) The position of mass A at (0.400 s)? Answer: (y=-0.196 m) (d) The velocity of mass A at (0.400 s)? Answer : (v=-0.980 m/s )
find Fy = T − mg = ???, Evaluate the scale reading (in N) from Equation (1) if a is upward, Evaluate the scale reading (in N) from Equation (1) if a is downward, and suppose that during the launch of a rocket from the surface of the Earth, an astronaut onboard the rocket stands on a bathroom scale and measures her weight to be 3.6 times her normal weight. Determine the magnitude of the acceleration of the rocket (in m/s2).
What is the parallelogram rule when drawing a free-body diagram? Especially with ramp problems, how would you generally want to approach solving them?
A person weighing 879. N rides in an elevator that has a downward acceleration of 1.37 m/s2. What is the magnitude of the force (in N) of the elevator floor on the person?
A rock, in deep space, has a rocket thruster, with negligible mass, attached to it. The rocket causes a force of 3,300[N]. If the rock has a mass of 4.62×104[kg], what is the acceleration experienced by the rock, due to this force alone? Express your answer in terms of m/s2.
Three stacked blocks are placed in an elevator as shown: Assume the stack of blocks is in contact with the floor of the elevator. If m = 11.9 kg and the elevator is accelerating upward at 1.9 m/s2, what is the normal force exerted on the 5m block by the 8m block? Express your answer in N, to at least one digit after the decimal point.
At one point during a flight, a 4kg model rocket burning fuel, generating a 140N thrust and experiencing a 60N drag. How many forces are acting on the rocket? What is the magnitude of the net force on the rocket? What is the magnitude of her acceleration? Describe the rocket's speed: