Worksheet-1 (Coplanar Forces)

1.   Define

a)   Force

b)   Moment of force

c)   Resultant

2.   State and prove Varignon’s theorem of moment.

3.   State the difference between Composition and Resolution of Forces.

4.  













Determine the resultant of the system of forces shown in figure. Locate the point where the resultant cuts the base AB.

5.   dam is subjected to three forces, 50kN on the upstream face AB, 30 kN force on the downstream inclined face and its own weight of 120kN as shown. Determine the single force and locate its point of intersection with the base AD assuming all the forces to lie in a single plane.

6.   Determine the resultant of three forces and a couple acting on a triangular plate and its location w.r.t. point A.

7.   A system of forces acting on a bell crank is shown in figure. Determine the magnitude, direction and the point of application of the resultant w.r.t. ‘O’.

8.   Resolve the system of forces shown into a force and couple at point ‘A’.

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