Physics and Engineering Concepts Quiz

If you have a gear train with two gears, one with 24 teeth and the other with 16 teeth, how many revolutions does the second gear make for each revolution of the first gear?

• 0.67

• 0.75

• 1.50

• 6

If A = 6 ft., the green box weighs 15 lbs., and the blue box weighs 20 lbs., what does distance B need to be for this lever to balance?

• 4.50 ft.

• 45.00 ft.

• 0.75 ft.

• 0.45 ft.

Which of the following is a ceramic?

• Glass

• Aluminum

• PVC

• Gold

If A = 9 ft., B = 1 ft., C = 5 ft., the green box weighs 40 lbs. and the blue box weighs 45 lbs., what does the orange box have to weigh for this lever to balance?

• 630.00 lb.

• 63.00 lb.

• 810.00 lb.

• 8.10 lb.

Sam can do 500 ft. lb. of work in 1 minute and 30 seconds. What would Sam have to do to increase his power output?

• Do 1,000 ft. lb. of work in 3 minutes

• Do 250 ft. lb. of work in 1 minute and 30 seconds

• Do the work in 1 minute

• Do the work in 2 minutes

Which of the following is not a modulus of elasticity?

• Shear modulus

• Bulk modulus

• Strain modulus

• Stretch modulus

Depending on where you apply effort and resistance, the wheel and axle can multiply:

• Force or power

• Speed or distance

• Force or distance

• Force or speed

The principle of moments defines equilibrium in terms of:

• Friction

• Torque

• Energy

• Power

Which of the following statements about this pulley configuration is false?

• Has a mechanical advantage of 1

• This is a block and tackle pulley configuration

• Does not multiply effort

• This is a fixed pulley configuration

If you lift a 28 lb. rock 2 ft. from the ground, how much work have you done?

• 56 ft. lb

• 0.07 ft. lb

• 112 ft. lb

• 14.00 ft. lb