The force with which the earth attracts a body is called the body's:
Weight
Length
Volume
Area
Dams are constructed with greater thickness in their bases due to:
Higher pressure
Lesser pressure
Greater force at the bottom
Lesser force at the bottom.
What is the SI unit of force?
Newton
Volt
Hertz
Ampere
What is the unit of pressure?
Pascal
Kelvin
In which of the following cases is friction a disadvantage to us ?
Running
Breaking
Writing with pencil
Parts of a machine rubbing with each other
Ships and boats made of iron float on water while an iron nail sink. This is due to
Relative density
Buoyant force
Principle of flotation
None of above
The force that opposes the motion or tendency of motion between two surface in contact is called:
Gravitational force
Surface tension
Force of friction
Magnetic force
The mutual force of attraction between two bodies because of their masses is called:
Frictional force
Elastic force
Which of the following increases friction ?
Lubricant
Treads on a tyre
Steam lining
Polishing
To lift 1 kg you would like to have apply a force of about:
1N
10N
100N
1000N
