7. Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift It the back of a truck. The floor of the truck is 1.5 m above the surface of the street. a. What is the ideal mechanical advantage of the ramp? b. How much force is required to lift the dresser vertically upwards into the back of the truck? c. If the ramp were frictionless, then how much force is needed to push the dresser up it at constant speed? d. the Billy Bob realizes that the ramp has a fairly rough surface. When he pushes the dresser up ramp, he has to apply 225 N of force. What is the mechanical advantage of the ramp? e. How much work is required to lift the dresser vertically into the back of the truck? f. How much work is required to move the dresser up the ramp? g. What is the efficiency of the ramp?

7. Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift It the back of a truck. The floor of the truck is 1.5 m above the surface of the street. a. What is the ideal mechanical advantage of the ramp? b. How much force is required to lift the dresser vertically upwards into the back of the truck? c. If the ramp were frictionless, then how much force is needed to push the dresser up it at constant speed? d. the Billy Bob realizes that the ramp has a fairly rough surface. When he pushes the dresser up ramp, he has to apply 225 N of force. What is the mechanical advantage of the ramp? e. How much work is required to lift the dresser vertically into the back of the truck? f. How much work is required to move the dresser up the ramp? g. What is the efficiency of the ramp?