A cylindrical specimen of sil is compressed by an axial proincipal stress of 500 kpa and radial principal stress of 200Kpa. Plot Mohr's circle of stress and determine: a. The maximum shear stress.
b. The normal and shear stresses on a plane inclined at 30 degree counterclockwise from the horizontal.

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false

Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.