______ is a rod which moves freely about a fixed point fulcrum.
Lever
Pulley
Screw
Wedge
A physical balance is an example of
inclined plane
wedge
lever
none of these
Simple machine which is used to lift heavy objects on a sloping surface is an ____
screw
axle
Who formulated the principle of levers ?
Albert Einstein
Archimedes
Robert Boyle
Issac Newton
Find the odd one
Nut cutter
Scissors
Wheel barrow
When you open or close the door of a house by holding its handle, it is an example of
wheel and axle arrangement
None of these
The point about which the lever turns is
load
resistance
effort
fulcrum
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.
Lemon squeezer is an example of
Complicated machine
complex machine
simple machine
A force applied to a machine to do mechanical work is called
output
efficiency