Click the correct answer (True or False).
Click the correct answer.
Which of these simple machines helps to move heavier objects at a height?
Lever
Inclined plane
Wheel and Axle
Screw
Which of the following classes of lever does a tong belong?
First class lever
Second class lever
Third class lever
Fourth class lever
Which of these is a modified lever of the first class?
Wedge
Fixed pulley
Wheel and axle
Tongs
Which of the following is classified on the basis of the position of the fulcrum, load and effort in different cases?
Lever
Inclined plane
Pulley
Screw
Click the correct answer.
The longer the rod or the lever, the
it is to move the load.
easier
difficult
heavier
lighter
Simple machines do work either by changing the direction of force or by reducing the
.
weight
effort needed
force
gravitational force
In a fixed pulley, the pulley is attached to a hook or a wall and it
.
moves slightly
moves vertically only
moves diagonally only
does not move
Bottle opener is an example of
.
first class lever
second class lever
third class lever
fourth class lever
