A farmer has to lift up a boulder 12 inches in the air in order to put it in his wagon. The boulder weighs 2000 lbf. The farmer has the following tools available: a fixed pulley and a moveable pulley with a rope; an inclined plane with an inclined length of 8 feet and a height of 12 inches; and a lever that is  10 feet long. The farmer has a maximum strength to push or pull of 100 lbf.

 

Design a system using the tools the farmer has available to move or lift the boulder.  Assume there is no friction and that mechanical advantage is ideal.

 

Draw a  detailed sketch of the system design, label all mechanisms and simple machines  utilized in the system, and dimension the sketch:

Describe in detail the system and how it will  operate:

Calculate the mechanical advantage of the individual mechanisms in the system and the total  mechanical advantage of the system:

Answer rating: 100% (QA)

He has to fix the movable pulley secured by a rope to the boulder He has to tie the rope at A 1 feet ... View the full answer