Pressure at a certain depth (h1) in river is P1 and at another depth h2 (1) is P2, then :
P1-P2 = atmospheric pressure
Pressure varies with force (F) as (providing area is same)
A solid weighs 300 N.Calculate the pressure exerted by the solid when it is kept on a glass surface,if the area of contact is 400 cm2.
Pressure can be increased by
Increasing both area and the force
Decreasing the area and increasing the force
Increasing the area and decreasing the force
Decreasing both the area and the force
Weight of a body is equal to
gravitational force acting on the body
mass of a body
The force of friction between two bodies is:
Parallel to contact surface
Perpendicular to contact surface
Inclined to contact surface
It is a non contact force
An action that involves pushing force is
Dragging a bag on a floor
Lifting a book from a table
Lifting a pen off a table
Kicking a ball
Which of the following statements is incorrect about a force?
It can be seen but it cannot be felt.
It is needed to start an object moving.
It can change the shape of an object.
It can make a moving object stop.
Which of the following is NOT a type of force?
Name the property of matter due to which a body continues in its state of rest or uniform motion unless an external force acts on it :s