a) A lift starts from rest and accelerates with constant acceleration of 1.5m/s2 up to a speed of 6m/s. It travels at 6m/s for a period of 15 seconds, after which it is retarded to speed of 1.2m/s. If the complete motion takes 30 seconds, find i) Draw the velocity - time graph of the motion. iii) The retardation ii) Determine the total distance travelled. iv) The average velocity for the journey v) The braking torque if the moment of inertia is 130kgm2 and the angular velocity of the motor drops from 12000 to 6000 rpm during the period of retardation.

a) A lift starts from rest and accelerates with constant acceleration of 1.5m/s2 up to a speed of 6m/s. It travels at 6m/s for a period of 15 seconds, after which it is retarded to speed of 1.2m/s. If the complete motion takes 30 seconds, find i) Draw the velocity - time graph of the motion. iii) The retardation ii) Determine the total distance travelled. iv) The average velocity for the journey v) The braking torque if the moment of inertia is 130kgm2 and the angular velocity of the motor drops from 12000 to 6000 rpm during the period of retardation.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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