13.133 An 8-kg cylinder C rests on a 4-kg platform A supported by a cordthat passes over the pulleys D and E and is attached to a 4-kg blockB. Knowing that the system is released from rest, determine (a) thevelocity of block B after 0.8 s, (b) the force exerted by the cylinder onthe platform. 8 kgD4 kgAFig. P13.133сB4 kgE

Answered: An 8-kg cylinder C rests on a 4-kg…

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

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Question

13.133 An 8-kg cylinder C rests on a 4-kg platform A supported by a cord
that passes over the pulleys D and E and is attached to a 4-kg block
B. Knowing that the system is released from rest, determine (a) the
velocity of block B after 0.8 s, (b) the force exerted by the cylinder on
the platform.

Expert Solution

Step 1

Introduction

In this problem, we will calculate the velocity of block B as well as the force exerted by the cylinder on the plate form. The velocity of the block may be estimated by taking tension in the left and right cables into account. We may determine the force exerted by the cylinder by taking into account the inertia of the combined left system.

Given data:

$\begin{array}{rcl} the mass of the cylinder {(m)}_{c} & = & 8 kg \\ the mass of the base (m) & = & 4 kg \end{array}$

Find out:

(a). The velocity of block B after a time of 0.8 seconds $(V)$

(b). The force exerted by the cylinder on the platform ${(F)}_{A C}$

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