The horizontal force P is applied to the cable wrapped around the inner spindle of the spool. The spool of cable weighs 20.37 lb/ft2, per unit of cross-sectional area that is visible, which accounts for the width into the page. The static friction between the spool and the 15° incline is ?s = 0.40. Determine the friction force acting on the spool if P is just sufficient to roll the spool up the incline without sliding. 15° 30" 18" P

The horizontal force P is applied to the cable wrapped around the inner spindle of the spool. The spool of cable weighs 20.37 lb/ft2, per unit of cross-sectional area that is visible, which accounts for the width into the page. The static friction between the spool and the 15° incline is ?s = 0.40. Determine the friction force acting on the spool if P is just sufficient to roll the spool up the incline without sliding. 15° 30" 18" P

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The horizontal force P is applied to the cable wrapped
around the inner spindle of the spool. The spool of cable
weighs 20.37 lb/ft2, per unit of cross-sectional area that is
visible, which accounts for the width into the page. The
static friction between the spool and the 15° incline is ?s =
0.40. Determine the friction force acting on the spool if P is
just sufficient to roll the spool up the incline without sliding.
15°
30"
18"
P
Ans P = 66.9 lb,
F = 39.1 lb

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