The force that is applied to the tool is the ___
fulcrum
effort
resistance
resistance arm
Simple machine which is used to lift heavy objects on a sloping surface is an ____
wedge
screw
inclined plane
axle
A pair of pliers is an example of
class I lever
class II lever
Class III lever
none of these
A force applied to a machine to do mechanical work is called
load
output
efficiency
The resistive force that is overcome by the effort is
pivot
Which of the following is not true for a machine?
To make our work convenient
To enable us to lift more load with less force
To enable us to make the measurement correctly
To make our work faster.
______ is a rod which moves freely about a fixed point fulcrum.
Lever
Pulley
Screw
Wedge
Who formulated the principle of levers ?
Albert Einstein
Archimedes
Robert Boyle
Issac Newton
Among the following _______ is not a simple machine
bead
scissors
knife
pulley
The point about which the lever turns is
