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1.
Which of the following do not have identical dimensions ?

2.
If three forces acting in different planes can be represented by a triangle, these will be in

3.
Which of the following is not the unit of distance ?

4.
a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

5.
In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than

6.
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

7.
Forces are called concurrent when their lines of action in

8.
The algebraic sum of moments of the forces forming couple about any point in their plane is

9.
According to principle of transmissibility of forces, the effect of a force upon a body is

10.
The unit of work or energy in SI units sis

11.
If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella

12.
The maximum frictional force which comes into play when a body just begins to slide over another surface is called

13.
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

14.
Center of gravity of a thin hollow cone lies on the axis at a height of

15.
A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t^2 (t – 4), the acceleration of the particle will be given by the equation

16.
The unit of force in S.I. units is

17.
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is \i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force w

18.
Forces are called coplanar when all of them acting on body lie in

19.
Two coplanar couples having equal and opposite moments