Two full-sized a × c-mm boards are nailed to a b x c-mm board and the resulting beam that is subjected to a vertical shear of 1700 N. Knowing that the allowable shearing force in each nail is 75N, determine the allowable spacing s that can be used between each pair of nails. Asume a=55 mm, b=55 mm and c=95 mm. Using a suitable cutout, passing through only the nails, the first moment of the area about the z-axis is calculated as x10-4 (m3)

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

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

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented