ball rolling down a slope? on different surfaces to see the affect friction has on motion? sorry I am not much of a physics wizz but it popped into my head thought it may or may not help
a hevy piece of macinery(85kg) is being moved by elevator between floors in a building. Two identical small cranes are used. a cable connects each 'crane' to a mounting hook on the top of the piece of equipment. the cable from one crane is at an angle of 22degrees below the horizontal while the...