Class 8 force and Pressure Test

The SI unit of force is _______________

The___________ force can be used to gather iron pins scattered on the floor.

If two forces applied to an object are equal and act in opposite directions, the net force acting on the object will be_________

Which one among the following is not a type of non-contact forces?

• Muscular force

• Magnetic force

• Gravitational force

• Electrostatic force

The pressure exerted by a liquid ______ with depth.

A drinking straw works on the existence of ________ pressure.

Atmospheric pressure _______ with increasing height.

The SI unit of pressure is _______

A force F acts on 4 different objects, having areas given below. In which case, the pressure exerted will be maximum?

• 20m²

• 50m²

• 10m²

• 100m²

A pressure of 10kPa acts on an area of 0.3 m². The force acting on the area will be

• 3000 N

• 30 N

• 3 N

• 300 N