00001511 00121903

10kN

+ fo 73 `

b) The uniform ladder is of mass 10kg and 2-൩ long, leaning against a vertical (7)
wall. The coefficient of static friction at A(wall) is 0.6 and at B (floor) is 0.4.
Determine the smallest angle, for which the ladder can remain in the
equilibrium.

14 If the coefficient of static friction equals 0.3 for all surfaces of contact, determine (14)
the smallest value of force P necessary to raise the block A of mass 300kg.
Neglect the weight of the wedge B. Angle of wedge is 10°.

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10001111
15 Find the centroid of the shaded area shown. Fig (൮15) (14)

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Fig (015) Fig (016)
16 Find the resultant of the force system shown in Fig. in which P=280N,Q=260 (14)
N and R= 21014. Fig (016)

Module-IV
17 Determine the tension in the inextensible string and the acceleration of the (14)

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