Exam Science Second Term Junior6 Part3

the distance between the resistance force and fulcrum is known as the ………….(choose)

all the following levers do not save effort exept …………..(choose)

any lever rotates a fixed point called the ………………(choose)

(choose)……….is a third class lever

(choose)………..class levers have the fulcrum between the resistanceforce and the effort force

all the following sentences describe the importance of levers exept ………….(choose)

(choose)………. is used to pick up tiny objects

in a first class lever if the effort force is 400 newten the effort arm is 10 cm and the resistance arm is 20 cm so the resistance force equals ………newton

effort force and resistance force are measured in ……………(choose)

the force arm is shorter than the resisitance arm in all the following ievers exept ……………(choose)

(choose)……………is an example of second class levers

(choose)…………. class lever have the effort force between the resistance force and fulcrum

(choose)………. is a lever that is used to avoid dangers

(choose)………..class lever always do not savr effort

(choose)…………….is a measuring unit of force arm and resistance arm

if the effort force of a lever equals 20 newton and the resistance force equals 40 newton so this lever ………..(choose)

(Choose)……..is considered a first- class lever

(Choose)………is a fixed point that a rigid bar rotates around it

which of the following levers always saves effort?

the type of lever which always does not save effort is the………(Choose)