Mechanical Comprehension MC (ASBAV)

Cog A has 12 teeth, and Cog B has 18 teeth. If Cog B completes two full rotations, how many rotations will cog A complete?. 1. 1.5. 2. 3.

If a 12 pound weight attached to a spring stretches it 2 inches, how much will it stretch with an 18 pound weight attached to it?. 3. 4. 6. 8.

A beam has a maximum strength of 3,000 psi. A 500-pound weight is added to the center of the beam and creates an added stress of 1,000 psi. How much more weight can be added before reaching its breaking point?. 500 pounds. 1,000 pounds. 1,500 pounds. 2,500 pounds.

What type of strength helps a material resist force acting to pull it apart?. Shear. Torsion. Compression. Tensile strength.

The boat oars are an example of what simple machine?. Screw. Wheel and axel. First class lever. Block and tackle.

What is the amount of force needed to keep the barrel from moving?. 50 lb. 75 lb. 150 lb. 300 lb.

The surface area of piston A is 2 square inches, while the surface area of piston B is 4 square inches. If piston A is pushed down 6 inches, how far will piston B move up?. 3 inches. 4 inches. 6 inches. 12 inches.

How much force is needed to balance this system?. 8 kg. 9 kg. 10 kg. 12 kg.

The definition of a vacuum is: the absence of matter. the force exerted by the weight of air. a space influenced by the atmosphere. a space in which the pressure is higher than atmospheric pressure.

When the belt moves in the direction shown, which pulley turns clockwise?. Only 1. Only 2. Only 3. All of them.

How much force is needed to balance this system?. 25 lb. 30 lb. 35 lb. 50 lb.

If gear A makes 150 revolutions per minute (rpm), how many rpms does gear b make?. 36 грm. 72 грm. 150 грm. 300 грm.

In this diagram of a simple gearbox, the gear ratios for each pair of gears is given. What will be the output speed if the input speed is 240 rpm?. 10 rpm. 20 rpm. 60 rpm. 120 rpm.

he surface area of piston A is 4 square inches, and the surface area of piston B is 16 square inches. If Piston A is pushed down 12 inches, how far will piston B move up?. 2 inches. 3 inches. 4 inches. 10 inches.

How much force is needed to balance this system?. 25 kg. 30 kg. 35 kg. 40 kg.

What is the amount of force needed to keep the barrel from moving?. 20 lb. 50 lb. 100 lb. 200 lb.

As part A moves to the left, gear C will turn: Only in direction 1. Only in direction 2. First in direction 1 and then in direction 2. First in direction 2 and then in direction 1.

Spaces are placed between slabs of concrete in city sidewalks to. improve traction. prevent water from puddling. collect dirt and other debris. allow for expansion and contraction.

Two wheels, as shown, are connected by a belt. If wheel A makes one complete rotation, how many rotations will wheel B make?. 1/2 rotations. 1 rotations. 2 rotations. 3 rotations.

Is it true that frictional forces: prevent motion altogether. only operate in vertical directions. always aid forces producing motion. always oppose forces producing motion.

A ball is attached to the end of rod AB, and the other end is attached to a vertical rotating axel. The joint at B contains a pin so that the ball can up and down. If the axel BC rotates faster, angle X will: increase. decrease. not change. become 90 degrees.

The illustration shows a water tank that is made of wood planks and reinforced metal hoops. Why are the hoops closer together near the bottom of the tank?. The hoops prevent the tank from toppling over. The hoops tend to slip down the sides of the tank over time. The weight of the wood planks requires more support near the bottom. The water pressure pushing against the sides of the tank is greater near the bottom.

Which of the objects has the most structural strength?. Triangle. Rectangle. Septagon. T-shape.

If the beam has a heavy load placed upon it at the point shown, at which point will the beam most likely break?. A. B. C. D.

Centrifugal force is the: force of attraction. outward force caused by rotation. force of a fluid on an immersed object. force resisting motion between one set of molecules and another.

If 100 pounds of force are applied over an area of 2 square inches, the pressure would be: 5 psi. 50 psi. 100 psi. 200 psi.

How much force is needed to apply 50 ft-lb of torque to a bolt using a 2 ft long wrench?. 100 pounds. 50 pounds. 40 pounds. 25 pound.

The surface area of the small piston is 4 square inches, while the surface area of the large piston is 8 square inches. If the small piston is pushed down 8 inches, how far will the large piston move up?. 8 inches. 6 inches. 4 inches. 2 inches.

If a force of 200 pounds is exerted over an area of 10 square inches, what is the pressure in terms of PSI?. 10. 15. 20. 200.

The three pulleys are connected by rubber belts. The two pulleys at the top have the same diameter, while the pulley below is twice their diameter. If the driver pulley at the upper left is turning clockwise at 60 RPM, at what speed and in which direction is the large bottom pulley turning?. 30 RPM, clockwise (A). 30 RPM, counterclockwise (B). 120 RPM, clockwise (A). 120 RPM, counterclockwise (B).

What type of gear arrangement is this?. spur. bevel. rack and pinion. worm and wheel.

A cable is pulling a 320-pound box up an incline that's 16 feet long. If 80 pounds of force is used to move the box up the incline, how tall is the incline?. 6 feet. 10 feet. 4 feet. 8 feet.

In case (a), both blocks are fixed. In case (b), the load is hung from a moveable block. Ignoring friction, what is the required force to move the load in both cases?. F1 = 500, F2 = 500. F1 = 500, F2 = 1000. F1 = 1000, F2 = 500. F1 = 1000, F2 = 1000.

The driver gear (Gear A) turns clockwise at a rate of 60 RPM. In what direction does Gear B turn and at what rotational speed?. Clockwise at 120 RPM. Counterclockwise at 120 RPM. Clockwise at 30 RPM. Counterclockwise at 30 RPM.

If Gear A is rotated by a motor at a rate of 100 rpm, how many revolutions will Gear C make per minute?. 50. 110. 150. 200.

What is the mechanical advantage?. 3. 4. 5. 6.

When the plug is removed, the water will: Flow into the tube but stop at the water level in the bucket. Flow into the bucket. It will not change. Fill up the tube completely.

What is the mechanical advantage?. 2. 3. 4. 5.

If wheel A rotates clockwise, which of the other wheels will also rotate clockwise?. All of them. B, C, E, G, and H. D and F. D, E, and F.

How much weight is needed to balance the system?. 20 Ibs. 35 Ibs. 45 Ibs. 70 Ibs.

If wheel A is three times the diameter of wheel B and it rotates at 55 RPM, how fast will wheel B rotate?. 55 RPM. 110 RPM. 165 RPM. 175 RPM.

If an 8 pound weight sitting on top of a spring compress it 2 inches, how much will it compress with a 12 pound weight sitting on top of it?. 3. 4. 5. 6.

How much force is needed to balance this system?. 2 kg. 4 kg. 5 kg. 10 kg.

In engineering terms, if a building does not deflect or move when a force is applied, it is said to be: Steady. Rigid. Perpetual. Constant.

If an effort of 2 pounds is applied on one side of the fulcrum to lift a load of 8 pounds on the other side of the fulcrum, what is the mechanical advantage of the lever?. 2. 4. 8. 16.

A dancer lifted his partner above his head at rate of 2 m/s2. If the dancer exerted a force of 100 N while lifting his partner, what was the mass of his partner in kg?. 50 kg. 75 kg. 100 kg. 200 kg.

If a swimmer who weighs 70 kg pushes off a pool wall with a force of 280 N, at what rate will the swimmer accelerate from the wall?. 2 m/s2. 3 m/s2. 4 m/s2. 5 m/s2.

Which of the following is NOT one of Newton's three laws of motion?. An object at rest will stay at rest, and an object in motion tends to stay in motion. E = mc2. For every action, there is an equal and opposite reaction. F = ma.

If the mass of a car is 1,000 kg, how much force would be required to accelerate the car at a rate of 3 m/s2?. 30 N. 300 N. 3,000 N. 30,000 N.

If a = 6 inches and b = 2 inches, what is the mechanical advantage of the pliers shown in the illustration?. 1. 2. 3. 6.

To balance the beam, how much weight should be placed on the right-hand side?. 5 kg. 10 kg. 15 kg. 30 kg.

An object moves on a frictionless plane at a velocity of 3 m/s. If no external force acts on the object, what is the object's velocity after 10 seconds?. 2 m/s. 3 m/s. 13 m/s. 33 m/s.

A car is moving at an initial velocity of 10 m/s and then accelerates uniformily at 10m/s2. What is the car's velocity after 4 seconds?. 40 m/s. 50 m/s. 75 m/s. 100 m/s.

What makes it more difficult to push a block of wood on a sandpaper surface than on a glass surface?. Gravitational force. Centrifugal force. Frictional force. Kinetic force.

A water pipe bursting when it freezes is an example of water's ability to: expand. contract. vaporize. sublimate.

What is the amount of force needed to keep the barrel from moving?. 60 Ibs. 80 Ibs. 100 Ibs. 120 Ibs.

What type of simple machine is shown in the illustration?. Pulley. Lever. Inclined Plane. Screw.

What is the mechanical advantage of the gear train shown in the illustration?. 2. 3. 4. 6.

A beam has a maximum strength of 4,000 psi. A 500-pound weight is added to the center of the beam and creates an added stress of 1,000 psi. How much more weight can be added to the beam before reaching its breaking point?. 500 pounds. 1,000 pounds. 1,500 pounds. 2,500 pounds.

Which of the following is a true principle of inertia?. It is the tendency of an object to change its backward motion. It is a force that causes objects to move. It is proportional to the mass of an object. It is a natural phenomenon that exists when friction is absent.

A steel wedge is placed next to a heavy stone. When the worker strikes the wedge, what will likely happen to the stone?. The stone will stay level and rise. Only the left side of the stone will riser. Unly the right side of the stone will rise. The stone will stay level and move to the right.

The pressure exerted by the water on the sand is: Greatest at A. Greatest at B. Greatest at C. The same all across the surface of the sand.

Which of the wheels are rotating in the same direction in the diagram?. A, B, C, and D. A, B, E, and F. A, B, C, and F. A, B, C, and E.

What is the mechanical advantage of the inclined plane illustrated below?. 2. 3. 4. 6.

What is the force acting on the log to keep it afloat?. Friction. Torsion. Inertia. Buoyancy.

A 10-pound weight attached to a spring stretches the spring by two inches. How many inches will it stretch if the 10-pound weight is replaced with a 15-pound weight?. 2. 3. 4. 6.

f a = 4 inches and b = 2 inches, what is the Mechanical Advantage (MA) of the pliers shown in the illustration?. 1. 2. 4. 8.

What is the mechanical advantage of the pliers shown in the illustration?. 3. 4. 8. 12.

What is the mechanical advantage of the gear train shown in the illustration?. 3. 4. 6. 8.

In this pulley system, what force must be applied to balance the 10-pound weight?. 3 1/3 pounds. 5 pounds. 7 pounds. 10 pounds.

Wheel A has a diameter of 6 inches, while wheel B has a diameter of 12 inches. If wheel A turns at a rate of 8 rpm, what will be the speed of wheel B?. 2 rpm. 4 rpm. 6 rpm. 8 rpm.

What is the amount of force needed to keep the barrel from moving?. 50 lb. 75 lb. 150 lb. 300 lb.

When the gear train is operating, which gears turn in the same direction?. F and I. G and J. G, I, and J. F, H, and J.

An object moves on a frictionless plane at a velocity of 2 m/s. If no external force acts on the object, what is the object's velocity after 10 seconds?. 2 m/s. 4 m/s. 10 m/s. 20 m/s.

A car is moving at an initial velocity of 5m/s and then accelerates uniformly at 10 m/s2. What is the car's velocity after 2 seconds?. 15 m/s. 25 m/s. 30 m/s. 50 m/s.