MEDIUM
8th ICSE
IMPORTANT
Earn 100

Describe the function of a simple mercury barometer. State its disadvantages.

Important Questions on Force and Pressure

EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Check your progress>Q A
The SI unit of pressure is _____.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Exercises>Q F
A force of 200 N acts on a rigid body such that the perpendicular distance between the force and the turning point is 50 cm. Calculate the moment of force.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Exercises>Q F
Calculate the force applied on a body producing a moment of force of 16 N m such that the perpendicular distance between the point of application of force and the turning point is 80 cm.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Exercises>Q F
The tip of a drawing pin has an area of 0.01 mm2. Find the pressure exerted by it if a force of 20 N is applied by it.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Exercises>Q F
A motorcycle weighs 1200 N. If the pressure exerted by one of its tyre is 120 Pa, then find the area of the tyre in contact with the road.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Think and answer>Q 1
Explain in brief why birds that walk on the leaves floating on the surface of the water have wide feet.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Think and answer>Q 2
Explain why the wall of a dam is made thicker at the bottom.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 3 - Force and Pressure>Think and answer>Q 3
When the nozzle of a syringe is dipped in a liquid and its piston is withdrawn, the liquid pushes up into the syringe. Give reason.