Write about 5 applications related to force, pressure and friction in agriculture each.
Plz give full answer.
Answers
Force:
i) It is used to move a stationary object or the object at rest.
ii) It is used to stop the motion of an object.
iii) It can change the size and shape of the object.
iv) It can be used to change the direction of motion of an object.
v) It can accelerate the speed of a moving body.
Pressure:
i) Air pressure in car tire supports the weight of the car.
ii) Sucking a drink through a straw - fluid flows because of pressure difference.
iii) Aircraft fly because of the air pressure on the wings.
iv) Bullet fired from a gun is driven by gas pressure.
v) Toy balloon inflates because of air pressure inside.
Friction:
i) Friction helps us to walk.
ii) We can write on paper or on boards using a pencil or chalk.
iii) The friction between the meteor and the atmosphere heats it up and makes it burn and shrink in size due to air resistance.
iv) We can fix a nail to the wall.
v) Brakes in vehicles are built on the concept of friction.