Q 2: A pin jointed frame (Figure 2) support a gravity load of 5k at C. An impulse cause the frame to vibrate freely in vertical direction with a velocity

of 0.2 ft/s. Calculate:

1. Static force corresponding to peak dynamic displacement.

2. Time required to complete 10 cycles during free vibration

Diameter of both members is 9/8 in Take E= 29,000 ksi

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

The higher the astm grain size number, the finer the gran is. a)-true b)-false