// LET'S STUDY AVIATION

Let's Study Aviation

Airframe Test A1 and Power Plant Test A4 — pick a subject and test yourself.

1 8481. What force must be applied to roll a 120-pound barrel up an inclined plane 9 feet long to a height of 3 feet (disregard friction)? L ÷ I = R ÷ E L = Length of ramp, measured along the slope. I = Height of ramp. R = Weight of object to be raised or lowered. E = Force required to raise or lower object.