types of levers 2

........is a rigid bar that rotates around fulcrum ,and its affected by an effort force and resistance force .

• lever

• solution

• mixture

• friction force

5. The force is exerted by a person to equilibrate the resistance.

• a. fulcrum

• b. effort force

• c. friction

• d. (a) and (b)

8.................  is a lever that uses a small force to make a great effort.

• a. Crowbar

• b. Hockey bat

• c. ice holder •

• d. Manual broom

9.................increases the speed of objects that we affect them.

• a. Manual broom

• b. Seesaw

• c. Hockey bat

• d. Coal holder

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

The lever rotates around a fixed point called ................ .

• resistance force

• fulcrum

• effort force

• a rigid bar

............ have the resistance force between the effort force and fulcrum.

• Third class levers

• First class levers

• Second class levers

• Fourth class levers

Water pump is a .....

• first class lever

• second class lever

• third class lever

• fourth class lever

............. is a lever from the 3rd order.

• Sweet holder

• Scissors

• Nutcracker

• Nail clippers

In the first class levers, the resistance is between the effort force and fulcrum.

• ✔

• ✘

The fulcrum of any lever is always between force and resistance.

• ✘

• ✔