Welcome to your Engineering Mechanics
1.
The unit of force in S.I. units is
2.
Forces are called concurrent when their lines of action in
3.
If a number of forces act simultaneously on a particle, it is possible
4.
Two coplanar couples having equal and opposite moments
5.
The forces, which meet at one point, but their lines of action do not lie in a plane, are called
6.
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
7.
The weight of a body is due to
8.
If three forces acting in different planes can be represented by a triangle, these will be in
9.
Forces are called coplanar when all of them acting on body lie in
10.
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve
11.
A cable with a uniformly distributed load per horizontal meter run will take the following shape
12.
A number of forces acting at a point will be in equilibrium if
13.
What horizontal force P can be applied to a 100-kg block in a level surface with coefficient of friction of 0.2, that will cause an acceleration of 2.50m/s^2?
14.
A 50-kilogram block of wood rest on top of the smooth plane whose length is 3 m, and whose altitude is 0.8 m. How long will it take for the block to slide to the bottom of the plane when released?
15.
A 10-lbm object is acted upon by a 4-lb force. What is the acceleration in ft/min2?
16.
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
17.
a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be
18.
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
19.
A single force and a couple acting in the same plane upon a rigid body
20.
Frictional force encountered after commencement of motion is called
