Answered: two 6.20 kg blocks are connected by a…

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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Question

two 6.20 kg
blocks are connected by a massless
string over a pulley of radius 2.40 cm
and rotational inertia 7.40 * 10-4
kg
m2. The string does not slip on
the pulley; it is not known whether
there is friction between the table and
the sliding block; the pulley’s axis is
frictionless. When this system is released
from rest, the pulley turns through 0.130 rad in 91.0 ms and the
acceleration of the blocks is constant.What are (a) the magnitude of
the pulley’s angular acceleration, (b) the magnitude of either block’s
acceleration, (c) string tension T1, and (d) string tension T2?

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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