A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above
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Two non-collinear parallel equal forces acting in opposite direction________________?
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The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are____________________?
A. balance each other
B. constitute a moment
C. constitute a couple
D. constitute a moment of couple
E. constitute a resultant couple
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Which of the following is not a scalar quantity__________________?
A. 2 and V6
B. 3 and 1 kg
C. V5andV5
D. 2 and 5
E. none of the above
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The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?
A. time
B. mass
C. volume
D. density
E. acceleration
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Which of the following is not the unit of pressure ?
A. coplanar non-concurrent forces
B. non-coplanar concurrent forces
C. non-coplanar non-concurrent forces
D. intersecting forces
E. none of the above
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The unit of work or energy in S.I. units is________________?
A. kg/cm
B. ata
C. atmosphere
D. mm of wcl
E. newton
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In the lever of third order, load W, effort P and fulcrum F are oriented as follows_________________?
A. newton
B. pascal
C. kilogram meter
D. watt
E. joule
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A. W between P and F
B. F between W and P
C. P between W and F
D. W, P and F all on one side
E. none of the above