Answer the following problems in detail.

problem 1) What do you understand by nipping of leaf springs and derive its formula.

problem 2) What will be the major difference in the design of shaft for a spur gear assembly versus that for a helical gear assembly?

problem 3) Describe the differences between design methodology adopted for the sliding and rolling type bearing.

problem 4) prepare a brief note on design of connecting rod.

problem 5) Choose a single row deep groove ball bearing for the radial load of 4000 N and an axial load of 5000 N, operating at a speed of 1600 r.p.m. for the average life of 5 years at 10 hours per day. Suppose uniform and steady load.

problem 6) Describe the design procedure for lubrication systems.

problem 7) describe the circumstances under which a designer will prefer a:

(a) Helical compression spring

(b) Helical tension spring

(c) Leaf spring

(d) Balleville