1.The magnetic declination at a certain place is 12 degree 6 minutes W.What is the magnetic bearing there (a) of true north (b) of true south and (c) of true west?
2.A particle travels to the right along a straight line with a velocity v=[6/(6+s)] m/s , where is in meters. Determine its deceleration when s = 1 m.
3.A steel plate which is 1.5 m by 1.5 m and 30 mm thick is lifted by four cables attached to its corners that meet at a point that is 2 m above the plate. Determine the required cross sectional area of the cables if the stress in them is not to exceed 20MPa.