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Civil Engineering
Applied Mechanics

1.  The angles between two forces to make their resultant a minimum and a maximum respectively are
A. 0° and 90°B. 180° and 90°
C. 90° and 180°D. 180° and 0°

2.  A block in the shape of a parallelopiped of sides lm x 2m x 3m lies on the surface. Which of the faces gives maximum stable block ?
A. 1 m x 2 mB. 2 m x 3 m
C. 1 m x 3mD. equally stable on all faces

3.  A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A.Neglecting the weight of the rod, the point at which the rod will balance is
A. 109.5 mm from AB. 119.5 mm from A
C. 125.5 mm from AD. 132.5 mm from A

4.  When two forces, each equal to P, act at 90° to each other, then the resultant will be
A. PB. PV2
C. P/V2D. 2P

5.  If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is
A. 30°B. 45°
C. 60°D. 120°

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