Force And Pressure

Which of the following is NOT an example of muscular force?

• A porter carrying a load on a wheel-barrow.

• An apple is falling from a tree

• A child riding a bicycle.

• A person drawing water from a well

Which of the following is NOT an example of the force of gravity?

• A leaf falling from a tree

• A boy pushing a cart on a level plane

• A diver jumping into a swimming pool

• A stone is falling from the cilff

Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories?

• Magnetic Force

• Gravitational force

• Electrostatic Force

• Frictional Force

Which of these are not contact forces

• Frictional Force

• Muscular Force

• Gravitational Force

• Mechanical Force

The same F acts on four different objects having the areas given below, one by one. In which case the pressure exerted will be the maximum?

• 20m.sq

• 50m.sq

• 10m.sq

• 100m.sq

Force has ___________ and has ____________.

Water in rivers flows __________ due to the force of _______________.

A force arises due to the __________ between two objects.

If two forces act in opposite direction, the net force is the addition between two forces.

• True

• False

The net force on an object is zero (0) if the two forces act on it in

• Opposite Direction

• Same Direction

• Sometimes opposite and sometimes same

• All of the above