does it only carry thousand of pounds stuff or wat?? for science project??
A CRANE USES MECHANICAL POWER ,PULLEYS ,COUNTER WEIGHTS.AND CABLE TO LIFT USING A BOOM IT CAN LIFT SEVERAL THOUSAND POUNDS
A crane is a mechanical lifting device equipped with a winder, wire ropes and sheaves that can be used both to lift and lower materials and to move them horizontally. It uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in the transport industry for the loading and unloading of freight; in the construction industry for the movement of materials; and in the manufacturing industry for the assembling of heavy equipment
Cranes are large, long-legged and long-necked birds of the order Gruiformes, and family Gruidae. While folklore often states that cranes mate for life, recent scientific research indicates that these birds do change mates over the course of their (considerable) lifetimes (Hayes 2005). Some species and/or populations of cranes migrate over long distances, while some do not migrate at all. Cranes are gregarious, forming large flocks where their numbers are sufficient.
