mechanisms jeopardy q $100 q $200 q $300 q $400 q $500 q $100 q $200 q $300 q $400 q $500 final...

Mechanisms JeopardyLevers / Incline Planes

Wheel & Axles / Pulleys

Screws / Wedges

Gears / Chain Drives

Key Words

Q $100

Q $200

Q $300

Q $400

Q $500

Q $100 Q $100Q $100 Q $100

Q $200 Q $200 Q $200 Q $200

Q $300 Q $300 Q $300 Q $300

Q $400 Q $400 Q $400 Q $400

Q $500 Q $500 Q $500 Q $500

Final Jeopardy

$100 Levers / Inclined Planes

Of the three classes, the __________ is the only one in which the effort force and the load force act in the same direction.

$100 Levers / Inclined Planes

1st–class lever

$200 Levers / Inclined Planes

An inclined plane with an IMA of 3.69 and an AMA of 2.97 is _______ efficient.

$200 Levers / Inclined Planes

80.5%

$300 Levers / Inclined Planes

_____________ levers, like the one in the diagram below, will always have a mechanical advantage with a value ________________.

$300 Levers / Inclined Planes

3rd-class;

between 0 and 1

$400 Levers / Incline Planes

The ideal effort force that would be needed to move this lever in the absence of friction is _______ .

$400 Levers / Incline Planes

75 pounds

$500 Levers / Inclined Planes

__________ is the ideal mechanical advantage of this inclined plane. 99 in..

$500 Levers / Inclined Planes

2.93

$100 Wheel and Axles / Pulleys

The ideal mechanical advantage of a pulley system is indicated by the ______________.

$100 Wheel & Axles / Pulleys

Number of Support Cables

$200 Wheel & Axles / Pulleys

___________ is the linear distance traveled in one revolution by a wheel with a 21 inch diameter.

$200 Wheel & Axles / Pulleys

65.94 inches

$300 Wheel & Axles / Pulleys

A wheel and axle system that is 75% efficient contains an axle that has an 8 inch diameter. The distance from the center of the axle to the crank handle is ___________ , given that the system’s ideal mechanical advantage is 4.

$300 Wheel & Axles / Pulleys

16 inches

$400 Wheel & Axles / Pulleys

The pulley system shown is ________ efficient.

$400 Wheel & Axles / Pulleys

67 %

$500 Wheel & Axles / Pulleys

A shutoff valve is designed to operate with 65 pounds of effort force. The valve will encounter 325 pounds of resistance force applied to a 4 inch diameter axle. The required wheel diameter to overcome the resistance force is __________.

$500 Wheel & Axles / Pulleys

20 inches

$100 Screws / Wedges

The diameter of the screw in diagram is __________ .

$100 Screws / Wedges

1 inch

$200 Screws / Wedges

To calculate the pitch of a unified screw thread, one must ______________________.

$200 Screws / Wedges

divide the value of 1 inch by the number of threads that occur in 1 inch parallel to the screw axis.

$300 Screws / Wedges

Make an annotated sketch of a isosceles-shaped wedge. Include all variables associated with the calculation its actual mechanical advantage.

$300 Screws / Wedges

$400 Screws / Wedges

A wrench with an 8 inch handle is used to install a ¼ - 24 UNF bolt into the engine of a truck. The mechanical advantage gained in the system is ____________.

$400 Screws / Wedges

602.88

$500 Screws / WedgesAn actual effort of 500 pounds is applied to the wedge shown. Given that the wedge’s cutting action is 90% efficient, the resistance applied to the wedge is ________.

$500 Screws / Wedges

900 pounds

$100 Gears / Chain Drives

The difference between a simple gear train and a compound gear train is ___________.

$100 Gears / Chain Drives

Simple gear trains have only one gear per shaft. Compound gear trains have at least one idler gear shaft that carries two gears.

$200 Gears / Chain DrivesThe gear ratio of the simple gear train shown is ______.

$200 Gears / Chain Drives

4 : 1

$300 Gears / Chain Drives

When calculating gear ratio, the number of teeth, diameter, and torque have direct relationships. While _____________ has an inverse relationship to the others.

$300 Gears / Chain Drives

Angular Velocity

$400 Gears / Chain DrivesIn the belt driven system shown, pulley B has a diameter of 16 inches. It is being driven by pulley A, which has a diameter of 4 inches. If pulley A is spinning at 60 RPMs, then pulley B is spinning at _____________ .

$400 Gears / Chain Drives

15 RPMS

$500 Gears / Chain DrivesA compound gear train is composed of four gears, A, B, C, and D. Gear A has 15 teeth and is meshed with gear B. Gear B has 25 teeth and shares a shaft with gear C, which has 10 teeth. Gear C is meshed with gear D, the output gear. Power is supplied at gear A with 100 ft·lb of torque and is traveling at 1600 rpm. Gear D should have _______ teeth for the system to have the necessary torque output of 800 ft·lb

$500 Gears / Chain Drives

48

$100 Key Words

The ratio of the magnitude of the resistance and effort forces applied to a system.

$100 Key Words

Actual MechanicalAdvantage

$200 Key Words

A force that produces or tends to produce rotation or torsion

$200 Key Words

Torque

$300 Key Words

A gear positioned between the driver and the driven gear used to change rotational direction.

$300 Key Words

Idler Gear

$400 Key Words

The turning effect of a force about a point equal to the magnitude of the force times the perpendicular distance from the point to the line of action from the force.

$400 Key Words

Moment

$500 Key Words

A condition where there are no net external forces acting upon a particle or rigid body and the body remains at rest or continues at a constant velocity

$500 Key Words

Static Equilibrium

Final Jeopardy

_______ is the ideal mechanical advantage of this compound machine.

Final Jeopardy Answer

36