From the following which one is not a unit of force?
Newton
Dyne
kg m/s2
Pascal
A surface of area 15 m2 exerts a pressure of 2 pa. Find the force applied?
15 N
10 N
30 N
35 N
Who invented the Barometer?
Torricelli
Faraday
Gravitational force is :
Repulsive force
Attractive force
both 1 and 2
niether repulsive nor attractive
'Friction can never be entirely eliminated'. This statement is :
False
True
Sometimes true
Sometimes false
Friction is what type of force?
contact force
Non-contact force
Both 1 and 2
Neither 1 and 2
A force changes :
The speed of an object
The direction of motion of object
either (1) or (2)
neither (1) or (2)
Hydraulic devices works on the principal of :
Archimedes principal
Bernoulli's principal
Pascal's law
Newton's law
Barometer is used to measure :
Force
Velocity
Pressure
Mass
Pascal is the unit of :
Area
Density
