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1)Two examples of forces that cause a change in the shape of an object are as follows: Squeezing of a plastic bottle changes the shape of the bottle. Deformation of clay by pressing it between the hands.
2)Force can change the static condition of a body.
A rest rubber ball begins to move, when a force applied on it.
Player applies a force on the stationary football while taking a penalty kick is football match. The force applied by player makes the football move towards the goal.
3)The head of nail becomes warm when it is hammered into a plank of wood. ... The kinetic energy of the moving hammer is converted into heat energy when it strikes the head of the nail. Due to this heat energy, the temperature of head of the nail increases.
4)Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
5)Pressure gauge, instrument for measuring the condition of a fluid (liquid or gas) that is specified by the force that the fluid would exert, when at rest, on a unit area, such as pounds per square inch or newtons per square centimetre. U-shaped Mercury manometer to measure pressure.
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