2) Scale reading in accelerating elevator: The 10.0 kg mass is on a scale, and the 8.00 kg mass hangs from the other end of the string over the pulley as illustrated and the system is in an elevator on earth. (Pulley & string massless, frictionless.) (See PSL 5.2,5) a) If zero acceleration: what is the scale reading in Newtons? Explain. b) Now the elevator and the entire mass and pulley system accelerate together. The reading on the scale is now 9.80 N. Based on this, what do you think is the direction of acceleration? (Gut feeling.) c) Draw FBDs for both the 10 kg and the 8 kg masses (for the accelerating system). d) Use N2L to determine the (i) string tension and (ii) acceleration of the system. Does the direction of the acceleration agree with your answer earlier? Elevator 10 kg scale Since everything accelerates together in the same direction, make this your positive direction for all objects. 8 kg

2) Scale reading in accelerating elevator: The 10.0 kg mass is on a scale, and the 8.00 kg mass hangs from the other end of the string over the pulley as illustrated and the system is in an elevator on earth. (Pulley & string massless, frictionless.) (See PSL 5.2,5) a) If zero acceleration: what is the scale reading in Newtons? Explain. b) Now the elevator and the entire mass and pulley system accelerate together. The reading on the scale is now 9.80 N. Based on this, what do you think is the direction of acceleration? (Gut feeling.) c) Draw FBDs for both the 10 kg and the 8 kg masses (for the accelerating system). d) Use N2L to determine the (i) string tension and (ii) acceleration of the system. Does the direction of the acceleration agree with your answer earlier? Elevator 10 kg scale Since everything accelerates together in the same direction, make this your positive direction for all objects. 8 kg

Name: 2) Scale reading in accelerating elevator: The 10.0 kg mass is on a s
Uploaded: 2024-03-20T06:56:46.000Z
Channel: Bartleby
Description: 2) Scale reading in accelerating elevator: The 10.0 kg mass is on a scale, and the 8.00 kg mass hangsfrom the other end of the string over the pulley as illustrated and the system is in an elevator on earth.(Pulley & string massless, frictionless.)

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 18CQ: In one amusement park ride, riders enter a large vertical barrel and stand against the wall on its...

See similar textbooks

Similar questions

A 15.0-kg object is in free fall near the surface of the Earth. What is its weight? What is its acceleration? What is the direction of the gravitational force exerted on it? How do your answers change if the same object is at rest on the surface of the Earth?
Unreasonable Result A mountain 10.0 km from a person exerts a gravitational force on him equal to 2.00% of his weight. (a) Calculate the mass of the mountain. (b) Compare the mountain's mass with that of Earth. (c) What is unreasonable about these results? (d) Which premises are unreasonable or inconsistent? (Note that accurate gravitational measurements can easily detect the effect of nearby mountains and variations in local geology.)
Astronomical observatrions of our Milky Way galaxy indicate that it has a mass of about 8.01011 solar masses. A star orbiting on the galaxy’s periphery is about 6.0104 light-years from its center. (a) What should the orbital period of that star be? (b) If its period is 6.0107 years instead, what is the mass of the galaxy? Such calculations are used to imply the existence of other matter, such as a very massive black hole at the center of the Milky Way.
In one amusement park ride, riders enter a large vertical barrel and stand against the wall on its horizontal floor. The barrel is spun up and the floor drops away. Riders feel as if they are pinned to the wall by a force something like the gravitational force. This is an inertial force sensed and used by the riders to explain events in the rotating frame of reference of the barrel. Explain in an inertial frame of reference (Earth is nearly one) what pins the riders to the wall, and identify all forces acting on them.
In the law of universal gravitation, Newton assumed that the force was proportional to the product of the two masses (m1m2) . While all scientific conjectures must be experimentally verified, can you provided arguments as to why this must be? (You may wish to consider simple examples in which any other form would lead to contradictory results.)
. As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. The spacecraft’s mass is 2.000 kg, and the thrust (force) of the rocket engines is 400 N. If its speed must be decreased by 1,000 m/s, how long must the engines be fired? (Ignore the change in the mass as the fuel is burned.)
To simulate the apparent weightlessness of space orbit, astronauts are trained in the hold of a cargo aircraft that is accelerating downward at g. Why will they appear to be weightless, as measured by standing on a bathroom scale, in this accelerated frame of reference? Is there any difference between their apparent weightlessness in orbit and in the aircraft?
Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one's birth. The only known force a planet exerts on Earth is gravitational. (a) Calculate the magnitude of the gravitational force exerted on a 4.20 kg baby by a 100 kg father 0.200 m away at birth (he is assisting, so he is close to the child) (b) Calculate the magnitude of the force on the baby due to Jupiter if it is at its closest distance to Earth, some 6.291011 m away. How does the force of Jupiter on the baby compare to the force of the father on the baby? Other objects in the room and the hospital building also exert similar gravitational forces. (Of course, there could be an unknown force acting, but scientists first need to be convinced that there is even an effect, much less that an unknown force causes it.)
A car moves at speed v across a bridge made in the shape of a circular arc of radius r. (a) Find an expression for the normal force acting on the car when it is at the top of the arc. (b) At what minimum speed will the normal force become zero (causing the occupants of the car to seem weightless) if r = 30.0 m?
A 647 kg satellite orbit Earth with a speed of 4.8 m/s at a distance of 2.4x10^4 km from Earth's centre a) Calculate the acceleration of the satellite. b) Calculate the gravitational force on the satellite.
L' 2µr? |The effective potential energy for gravitation force given in figure whe. u is effective mass and u=ml for m1<
Question 7 polr Figure shows the velocity graph of a 65 kg student in an elevator. What is the student's apparent weight (magnitude only) at t 1.0s, in Newtons? Use g= 10.0 m/s. Your answer needs to have 2 significant figures, your answer should be a positive number. (No unit is needed in your answer, it is already given in the question statement.) Vy (m/s) 8- 4. 1 (s) 10 4. 6.