M2 final review 2022

Oliver used an effort force of 200N to lift a load(bucket of water) up.

If the radius of the wheel is 40cm and the radius of the axle is 10cm,

A)What is the IMA?

B)What is the weight of the load if the AMA is 3?.

What is the IMA of the steering wheel?

• 2

• 18

• 9

• I'm not sure

Which is not a simple machine?

• Pulley

• Lever

• Gear

• Wheel and axle

Which is true?

• The IMA of the pulley is 2

• AMA of the pulley is 2

• His effort force will get 1x bigger

• His effort force will get 2x bigger

If his effort is 60N, what is the efficiency of the pulley?

• 83.3%

• 90.1%

• 120%

• 75.0%

Which screw driver will turn a screw easily?

• The one with smaller wheel

• The one with bigger wheel

• They both will need the same effort

• it will depend on the screw