Awood salvage company is hoisting an old tree trunk off the bottom and out of a lake. the cable from the hoist is tied around the log above its center of mass. the hoist applies a force of 9,800 n to the cable to suspend the log in the lake water (ft water), and a force of 29,000 n to suspend the log above the lake surface (ft air). what are the volume and density of the log? assume the lake water has a density of 1,007 kg/m3.
complex. they both mean a machine which involves two or more simple machines.
cardiovascular fitness: 3, 4, 7
flexibility: 1, 5
muscular fitness: 2, 6