ASVAB Practice Test 3 Mechanical Comprehension

A person in a wheelchair exerts a force of 25 newtons to up a 8-meter long ramp. If the height of the ramp is 3 meters and the total weight of the person with their wheelchair is 60 newtons, what is the efficiency of this machine?

A lever with an effort arm of 12 feet, and a load arm of 2 feet would have a mechanical advantage of:

A wrench is a useful tool in applying:

The formula to calculate work is:

Which of the following is not a simple machine?

Sarah did 60 joules of work when she threw a softball for 2 meters. How much force did she exert when she threw the softball?

Three gears are connected in a series. If the first gear turns clockwise, the third gear will turn:

Six gears are connected in a series. If the first gear turns clockwise, the sixth gear will turn:

Two gears are connected as part of a series. If the first gear has 10 teeth and the second gear has 50 teeth, what is the rotation ratio of the first gear to the second gear?

Two gears are connected as part of a series. If the first gear has 25 teeth and the second gear has 75 teeth, what is the rotation ratio of the first gear to the second gear?

The gears on a bike reflect a 4:3 turn ratio between the front wheel and back wheel. If someone pedals 40 revolutions per minute (rpm), how fast will the rear wheel rotate?

A lever with an effort arm of 4 inches and a load arm of 1 inch would have a mechanical advantage of:

A lever with an effort arm of 3 feet and a load arm of 6 inches would have a mechanical advantage of:

A load that requires 80 newtons of force to move will require ________ of force with a fixed pulley system.

A block and tackle pulley is set up with a mechanical advantage of 6. A mover could use it to reduce the amount of effort needed to move a load of 120 newtons with a force of:

What is the power of an electronic that can perform 5,400 joules of work in 18 seconds?