7. Determine the force in each member of the truss shown. State whether each member is in tension or compression [RA=6 KN, Hy= 6 KN, Hx=0] [AB=7.5 KN (C), AC=6 KN (T), CE= 6 KN (T), BD= 5 KN (C), BE=2.5 KN (C), DF= 5 KN (C), DE= 3KN (T), EF=2.5 KN (C), EG= 6 KN (T), EG=0, FH= 7.5 KN (C), GH= 6 KN (T)] 3 KN 3 ΚΝ 3 KN D 1.5 KN 1.5 KN 3 m B F 3 m Ao H E G 4 m 4 m 4 m - <4m

Find degree of freedom for folding ironing board showed in picture.

Calculate external support reactions, forces of internal joints and draw FBD of assembly

a. Show how the extent of the surfacing weld is indicated between the vertical centerlines in the following illustration.

Q.1 Why is a special type of CV grease used to lubricate a Birfield/Rzeppa joint? Q.2 What is the purpose of the rubberised boot which encompasses most drive joints? Q.4 Explain why the tube on a propeller shaft is designed to slide in/out during operation.

What are the most important factors in designing joints?

Calculate internal force for member AB using the method of joint. 5 m on 60 kN 5 m Select one: O a. 84.85 kN (C) O b. 23.85 KN (C) Oc. 25.85 kN (T) O d. 24.85 kN (T)

Examine the different mobility of planar mechanisms and determine the numberof degrees of freedom of the following items.