Some ECOR1048 students are curious about expanding their knowledgebase and conduct an experiment. They attach a pendulum to the roof of an elevator, to find the tension in the supporting light rod when the elevator accelerates upwards. They conducted the experiment, but unfortunately lost all their data. Now they are modelling the scenario theoretically (since they are still curious). If the pendulum is displaced by an amount, 0o, and released from rest (with respect to the elevator), determine: a) The tension, To, in the supporting light rod when 0 = 0. b) Evaluate your result for when 0, 2°

Some ECOR1048 students are curious about expanding their knowledgebase and conduct an experiment. They attach a pendulum to the roof of an elevator, to find the tension in the supporting light rod when the elevator accelerates upwards. They conducted the experiment, but unfortunately lost all their data. Now they are modelling the scenario theoretically (since they are still curious). If the pendulum is displaced by an amount, 0o, and released from rest (with respect to the elevator), determine: a) The tension, To, in the supporting light rod when 0 = 0. b) Evaluate your result for when 0, 2°

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A Wm 729-N weight man stands on a spring scale in an elevator. During the first 3 seconds of motion from rest, the tension Tin the hoisting cable is 8,704 N. Find the reading R of the scale in newtons during this interval. The total weight of the elevator, man, and scale is Wt 7,006-N. y 1 y T WT R Wm
2. A moving car, represented as a point, has a time-varying position given by z(t) = a +be² -ct and a time-varying velocity given by (1)=2b1²-6ct² where a = 2.17 m. b = 4.80 m/s², and c= 0.100 m/s. Find: (a) the car's average velocity from 2.00 to 10.0 s, (b) the car's average acceleration during the same interval. (c) the car's velocity at t = 5.0 s. (d) and the car's acceleration at the same time.
A board sits in equilibrium. On the left end, there is a wire that supports the board from the ceiling, and to the right, there is a sawhorse that supports the board from the ground. The sawhorse is a distance d= 1/5l from the right edge of the board. There is a block with mass ms= 4.5kg that is a distance 3/4l from the right edge of the board. Finally the board has a mass mb= 11kg. c) Write down Newton's 2nd law. Put the equation in terms of mb, ms, g, T, and Fn. Where T is the tension in the wire, and Fn is the normal force of the sawhorse on the board. d) Write down Newton's 2nd Law for rotations. Put the equation in terms of l, mb, ms, g, T, and Fn.
A vertical spring with a mass attached at its end stretches by an amount 20 cm before coming to rest. The same spring and mass is now placed on a smooth inclined plane with one end fixed to the top of the plane. The plane makes an angle of 30° with the horizontal. By how much will the spring stretch before coming to rest? |The spring on the inclined plane is stretched further by 15 cm and released from rest. What is its speed when it passes through the new equilibrium position?
The position of a 2 kg object is given as x(t) = 3t2 +5, where z is in meters and t is in seconds. (a) Determine the force F responsible for this motion. (b) If the force only results in a change in the kinetic energy of the object of 200J between ty =0s and ta = 5 s, determine the value of 3. (c) Without using kinematies (equations of motion), determine the displacement of the object durine these 5 seconds referred to in part (b).
Two box hang from the ends of a string suspended from a frictionless pulley. The mass on the left is chosen to create a tension of 4 N in the string. The box on the right has a weight of 2 N. What will be the acceleration of the box on the right? Assume the acceleration of gravity is 9.8 m/s?. 4 N 2 N
d2 d₁ A Ad₁ VA = A small cylinder with a weight of 10 lb is dropped from an initial height of d₂: 3 ft from rest. The spring has an unstretched length of lo = 12 inches and a spring constant of k = 30 lb\inch. The spring is intially compressed by small ropes to a length d₁ = 6 inches. = k What is the maximum additional distance the spring compresses after the cylinder lands on the platform? Assume the platform and spring are massless in this calculation. inches
A proposal is made to use a giant spring in the bottom of an elevator shaft as a means of safely "catching" a falling elevator car. The car freefalls until it hits a spring, which is then compressed until the car stops. The car's loaded weight is 20.0 kN. The elevator will service 20 floors. Distance between floors is 4 m. The deceleration rate of the car should not exceed 10 g's as it is being stopped. (a) determine the requirements for the spring constant and the amount the spring will compress in order to catch the falling car in the worst-case scenario. (b) what do you think about this proposal? Is it practical?
Problem Description You are stuck in an elevator with a meter stick, a spring with a spring constant of 30 N/m, and an object with a mass of exactly 0.5 kg. When you suspend the object from the end of the spring, you find that the spring stretches by 18 cm. Determine everything you can about the motion of the elevator from this information. Instructions In a neat and organized fashion, write out a solution which includes the following: 1. A sketch of the physical situation with all given physical quantities clearly labeled. 2. Represent the forces exerted on the object using a force diagram and, after you have made your determinations about the motion of the elevator, construct possible motion diagrams representing the motion of the elevator (if you think there is only one possible motion draw that, if you think there are several possible motions draw motion diagrams for each of them). 3. Determine everything you can about the motion of the elevator. Use your force diagram and…