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WorksheetsLesson 3 class 7 and 8
Total questions: 14
Worksheet time: 7mins
There are ...... types of simple machine
2
4
5
6
In which class wheel barrow lies?
first
Second
Third
no one
Winding road is an example of ...............
Lever
inclined plane
Wedge
Pulley
EL is the formula of
Mechanical Advantage
Velocity ratio
work output
work input
In third class lever which lies between?
load
Fulcrum
effort
no one
There are ...... types of lever.
2
3
4
5
The principle of lever is ..........
L x LD = E x ED
E xED = L x LD
Both
no one
Screw driver is an example of .....
screw
lever
inclined plane
wheel and axle.
Example of second class lever is .
bottle opener
wheel borrow
nut cracker
All above
In simple machine load is always ............ than effort.
smaller
equal
greater
greater and smaller
load distance is always ...... than effort distance.
less
more
equal
no one
Simple machine is important because....
it makes work faster
it makes work slower
it cannot magnify the force.
it does not change the direction.
Full form of FLE is....
force load effort
fulcrum load effort
force lode effort
fulcrum load energy
Velocity ratio of a lever is calculated by using formula
VR = LdEd
VR = EdLd
VR = L xLd
VR = E X Ed
