An engine that weighs 350 pounds is removed from an aircraft…

An engine that weighs 350 pounds is removed from an aircraft by means of a mobile hoist. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. A constant force of 70 pounds is required to move the loaded hoist. What is the total work input required to move the hoist?

An aircraft with an empty weight of 1,500 pounds and an empt…

An aircraft with an empty weight of 1,500 pounds and an empty weight CG of +28.4 was altered as follows:|1. two 12-pound seats located at +68.5 were removed;|2. structural modifications weighing +28 pounds were made at +73;|3. a seat and safety belt weighing 30 pounds were installed at +70.5; and|4. radio equipment weighing 25 pounds was installed at +85.|What is the new empty weight CG?