Scissors is an example of
Lever of first order
Lever of second order
Lever of third order
Single fixed pulley
If a cube has a weight of 500 N and the area of its side is 1 m2 the pressure it exerts on the ground is
500 N/m2
100 N/m2
50 N/m2
5 N/m2
SI unit of pressure is
Nm
Nm2
N/m
N/m2
Which mechanism is used in brake system of a car?
Hover craft
Hydraulic
Lever
None of these
Aerosol cans used to contain a gas made from
Hydrogen
Methane
Chlorofluoro carbon
Ethane
A force can produce
A turning effect
An increase in size
An increase in volume
All the above
Bottle openers are the example of
Lever of I order
Lever of II order
Lever of III order
Simple machine
If the area where pressure is applied is smaller than the area where the pressure is decreased, then the strength of the force is
Increased
Decreased
Remains the same
First increased and then decreased.
Which of the following stops you while sinking into the snow?
Skis
Boat
None
The external force applied to the machine is called
Effort
Fulcrum
Load
Pulley
