Which are the 3 components of a simple machine

• Driver, driven and Converting element

• Driver, rotary and linear

• Two or more mechanisms

• Pulleys, Levers and Gears

Feeds the energy to the machine

• DRIVEN ELEMENT

• CONVERTING ELEMENT

• TRASMITTION ELEMENT

• DRIVER ELEMENT

Which one is a 2nd class lever?

• 
• 
• 

Mechanism that consists in a set of two wheels with teeth.

Indicate the needed force in this case.

• 400 N

• 1000 N

• 6000 N

• 600 N

In which direction balance is inclined?

• RIGHT

• LEFT

• BALANCE IS IN EQUILIBRIUM

What class of lever does this image belong to?

• FIRST CLASS

• SECOND CLASS

• THIRD CLASS

These kind of gears transmits motion between pendicular shafts

• Bevel

• Helical

• Spurs

• Hoists

Speed in C GEAR?

• C= 100 rpm

• C=120 rpm

• C=30 rpm

• C= 15 rpm

Look to gears number 1 and number 5 and choose the right direction for each one

• Gear 1 is moving opposite direction and 5 same direction than gear number 2

• Gear 1 is moving same direction and 5 opposite direction than gear number 2

• Both gears number 1 and 5 are moving in the same direction than gear number 2

• Both gears number 1 and 5 are moving opposite direction than gear number 2