Examlex
A bucket of water with total mass 23 kg is attached to a rope,which in turn,is wound around a 0.060-m radius cylinder at the top of a well.A crank with a turning radius of 0.5 m is attached to the end of the cylinder.What minimum force directed perpendicular to the crank handle is required to just raise the bucket? (Assume the rope's mass is negligible,that the cylinder turns on frictionless bearings,and that g = 9.8 m/s2. )
Q16: An automobile gas tank is filled to
Q26: A 300-N uniform ladder,8.0 m long,rests against
Q36: A Hooke's law spring is compressed 15.0
Q46: A 8.4-kg mass is placed at (3.0,4.0)m.Where
Q48: A crate of weight W is being
Q50: Old Faithful geyser in Yellowstone Park shoots
Q52: A uniform,horizontal beam of length 6.0 m
Q60: The dimensional equivalence of the quantity "momentum"
Q69: Which one of the following processes of
Q76: A baseball catcher puts on an exhibition