Question

B) List the type of contact forces and give one example of each.​

Answer 1

Answer:

Explanation:

CONTACT FORCE

• Force of friction - when u roll a ball on ground

•Muscular force- when u hit a ball with a bat.

NON-CONTACT FORCE

• Magnetic force

•Gravitational force

•Electrostatic force

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Answer 2

$\huge {\underline {\underline {\sf {ও \: Answer}}}}$

$\large{\purple {\underbrace {\mathtt {\purple{Contact \: forces}}}}}$

Contact forces are forces that act between two objects that are physically touching each other. Examples of contact forces include:

${\pink {\underbrace {\mathtt {\pink{Reaction \: forces}}}}}$

• An object at rest on a surface experiences reaction force.
• For example, a book on a table. A box rests on a table. There are two arrows, equal in size but going in opposite directions, up and down, from the point where the box meets the table.

${\pink {\underbrace {\mathtt {\pink{Tension}}}}}$

• An object that is being stretched experiences a tension force.
• For example, a cable holding a ceiling lamp. A box hangs from a rope. Two arrows which are equal in size act upwards and dowards from the top and bottom of the rope.

${\pink {\underbrace {\mathtt {\pink{Friction}}}}}$

• Two objects sliding past each other experience friction forces.
• For example, a box sliding down a slope. A box rests on an incline. There are three arrows; one acting vertically downwards from the centre of the box’s base. One arrow acts perpendicular to the incline. One arrow acts up the incline.

${\pink {\underbrace {\mathtt {\pink{Air \: Resistance}}}}}$

• An object moving through the air experiences air resistance.
• For example, a skydiver falling through the air.