Question

By exerting an effort of 115 pounds, you move a 300–pound crate up an inclined plane 12 feet long to a truck bed three feet above the sidewalk.

What is the theoretical mechanical advantage of the inclined plane?

1. One 2. Two 3. Three 4. Four (Pick The Correct Answer)

How much of your effort is used to overcome friction?

1. 35 lb 2. 40 lb 3. 75 lb 4. 115 lb (Pick The Correct Answer)

A 3,000–pound automobile is towed up a ramp 150 feet long running from the street floor to the second floor of a garage. The towing force required was 300 pounds. What is the distance between floors if 20 pounds of force were needed to overcome frictional resistance?

1. 8.6 ft 2. 10 ft 3. 14 ft 4. 15 ft (Pick The Correct Answer)

Answer 1