The wheel weighs 48 lb and rests on a surface for which ?B = 0.2. A cord wrapped around it is attached to the top of the 72-lb homogeneous block. (Figure 1). If the coefficient of static friction at Dis ?D= 0.3, determine the smallest vertical force that can be applied tangentially to the wheel which will cause motion to impend. P A 1.5 ft B -1.5 ft- C D 3 ft
The wheel weighs 48 lb and rests on a surface for which ?B = 0.2. A cord wrapped around it is attached to the top of the 72-lb homogeneous block. (Figure 1). If the coefficient of static friction at Dis ?D= 0.3, determine the smallest vertical force that can be applied tangentially to the wheel which will cause motion to impend. P A 1.5 ft B -1.5 ft- C D 3 ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The wheel weighs 48 lb and rests on a surface for which ?B
= 0.2. A cord wrapped around it is attached to the top of
the 72-lb homogeneous block. (Figure 1). If the coefficient of
static friction at Dis ?D= 0.3, determine the smallest vertical
force that can be applied tangentially to the wheel which
will cause motion to impend.
P
A
1.5 ft
B
-1.5 ft--
C
D
3 ft
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