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1.
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of

2.
Forces are called coplanar when all of them acting on body lie in

3.
Which of the following do not have identical dimensions ?

4.
A projectile is fired at an angle B to the vertical. Its horizontal range will be maximum when angle B is

5.
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

6.
The maximum frictional force which comes into play when a body just begins to slide over another surface is called

7.
The algebraic sum of moments of the forces forming couple about any point in their plane is

8.
A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the s

9.
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly

10.
Frictional force encountered after commencement of motion is called

11.
The magnitude of two forces, which when acting at right angle produce resultant force of lO lbs and when acting at 60° produce resultant of l3 lbs. These forces are

12.
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

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

14.
Coefficient of friction is the

15.
The coefficient of friction depends on

16.
When trying to turn a key into a lock, following is applied

17.
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one

18.
The ratio of limiting friction and normal reaction is known as

19.
Two coplanar couples having equal and opposite moments

20.
If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella