Mechanical Comprehension #2

Which of the following is the best example of an inclined plane?

Simple machines are useful in that they

The measure of the quantity of matter in an object is its

15 J of work were expended moving an 18 kg block. At what velocity did the block move?

Jeremy chucks a baseball as far as he can. His arm is operating as a

“For every action there is an equal and opposite reaction” best summarizes which of Newton’s Laws of Motion?

Work occurs when

A farmer is attempting to pull a log with a line of rope attached to a tractor. Where should she watch for breakage on the rope?

If a large gear drives a smaller gear, which of the following will not occur?

In terms of force, what makes hydraulic jacks so useful?

Weight is the

How is a wedge different from an inclined plane?

What is the mechanical advantage of a teeter-totter built so that each seat is 2 meters from the fulcrum?

Power is the

Energy is

What is the advantage of a single pulley?

You’re trying to replace a flat. How much torque are you applying to a wheel nut if you’re applying 40 pounds with a wrench measuring 9″?

A 180 pound person dives off of a 30 foot cliff. What is their velocity as they enter the water?

Which of the following is an example of potential energy?

Which of the following is not a unit of power?

A perfectly efficient machine

Tension can best be called

Which of the following wedges generates the greatest amount of force.

Gears are used to

What measures how much force is applied to an object in order to rotate it?

The wheel of a car has a diameter of 16 inches and moves a smaller wheel of 4 inches. What is the mechanical advantage gained by the system?

A lever

Which of the following situations requires overcoming the least amount of kinetic friction?

What is the point at which the lever pivots?

How many kilograms is a cow on a trailer if 1200 newtons of force are acting on it?

When a machine compounds the force you use, it gives you a(n)

What is the potential energy of a 4 lb. book held 50 feet in the air?

Which of the following is the basis for Pascal’s Law?

The smaller gear has 8 teeth, and the larger gear has 16 teeth. When the larger gear makes 12 revolutions, how many revolutions will the smaller gear make?

How much force is needed to lift the 10 Kg weight?

An 80-lb child is sitting on one end of a seesaw. If another 80-lb child jumps from a high platform onto the other end of the seesaw, what will happen?

What is a vector quantity?

Which of the following describes the relationship between kinetic energy, mass, and velocity?

One horsepower is equivalent to

What type of simple machine is pictured above?

At minimum, how many pulleys are there in a block and tackle system?

When torque increases, speed

If a wedge is made longer relative to its height, how does the force increase?

If a man uses 200 N of force over a distance of 50 meters, how many joules of work are performed?

What is a component of potential energy?

A fish tank at an aquarium contains several cubic feet of water (1 cubic foot of water = 62.5 pounds). If the fish tank is 6 feet deep, 12 feet wide, and 13 feet long, what’s the approximate pressure at the bottom of the tank in pounds per square inch?

If Gear A turns counterclockwise, what other gears turn counterclockwise?

The well pictured above uses what type of simple machine to raise and lower a bucket?