Two blocks are connected by a rope that passes over a frictionless pulley A and a fixed drum B, as shown below. The coefficient of friction between the rope and the drum is 0.3 and between all other surfaces is 0.4. Determine the minimum force P that must be applied to the bottom block to start motion.

Two blocks are connected by a rope that passes over a frictionless pulley A and a fixed drum B, as shown below. The coefficient of friction between the rope and the drum is 0.3 and between all other surfaces is 0.4. Determine the minimum force P that must be applied to the bottom block to start motion.

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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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Two blocks are connected by a rope that passes over a frictionless pulley A
and a fixed drum B, as shown below. The coefficient of friction between the
rope and the drum is 0.3 and between all other surfaces is 0.4. Determine the
minimum force P that must be applied to the bottom block to start motion.
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0.4 m
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120 N
220 N
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Blocky most be slipping
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Step 1: Given Data:

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Step 2: FBD of Block1- Sliding case

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Step 3: FBD of Block1- Tilting case

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Step 4: FBD of Drum:

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