ENGINEERING MECHANICS

 

1)The forces 20 N, 30 N, 40 N, and 60 N are acting at one of the angular points of a regular pentagon, towards the other five angular points, taken in order. Find the magnitude and direction of the resultant force.

The following forces act at a point :
(i) 20 N inclined at 30° towards North of East,
(ii) 25 N towards North,
(iii) 35 N towards North West, and
(iv) 35 N inclined at 40° towards South of West.
Find the magnitude and direction of the resultant force.

2)Draw shear force and bending moment diagrams for a cantilever beam of span 1.5m carrying point loads as shown in the figure.

3)A cantilever beam 1.5m long carries point loads of 1KN, 2KN, and 3KN at 0.5m, 1.0m, and 1.5m from the fixed end respectively. Draw the shear force and bending moment diagrams for the beam.