The 240 -lb body in Fig. P-1078 is supported by wheels at B which roll freely without friction and by a skid at A under which the coefficient of friction is 0.40. Compute the value of P to cause an acceleration of 1/3g.
The 240 -lb body in Fig. P-1078 is supported by wheels at B which roll freely without friction and by a skid at A under which the coefficient of friction is 0.40. Compute the value of P to cause an acceleration of 1/3g.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The 240 -lb body in Fig. P-1078 is supported by wheels at B which roll freely without friction and by a skid at A under which the coefficient of friction is 0.40. Compute the value of P to cause an acceleration of 1/3g.
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Transcribed Image Text:with its sides parallel to the truck's motIUI.
cient of friction between the box and the truck is 0.30, show whether the block will
slide or tip first as the acceleration of the truck is increased.
1077. The uniform block shown in Fig. P-1077 weighs 200 lb. It is pulled up the
incline by the force P 300 lb. Determine the maximum and minimum values of a
so that the block does not tip over as it slides up
the incline. The coefficient of friction is 0.20.
2.32 ft; min. d = 1.253 ft
Ans. Max. d =
%3D
c.g.
-=0.20
2'
アァ
-5-
FIG. P-1077.
FIG. P-1078 and P-1079.
/1078. The 240-lb body in Fig. P-1078 is supported by wheels at B which roll
freely without friction and by a skid at A under which the coefficient of frietion is
0.40. Compute the value of P to cause an acceleration of g.
Ans. P= 136.3 lb
Tf this
Transcribed Image Text:Ans. Mаx. d %D
c.g.
2'
5-
FIG. P-1078 and P-1079.
1078
t R which rol
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