Question

Ꮋᴏʟᴀ....!!

$\pink{Ϙᴜᴇsᴛɪᴏɴ}$

➣Ꮤʀɪᴛᴇ Ꭰᴏᴡɴ Ͳʜᴇ Ꮇᴇᴛʜᴏᴅꜱ ϴꜰ Ꭱᴇᴅᴜᴄɪɴɢ Ғʀɪᴄᴛɪᴏɴ Ꭺɴᴅ Ꭼxᴘʟᴀɪɴ.

➥ᴅᴏɴ'ᴛ ꜱᴘᴀᴍ
➥ᴅᴏɴ'ᴛ ᴄᴏᴘʏ ꜰʀᴏᴍ ɢᴏᴏɢʟᴇ
➥ɴᴇᴇᴅ Qᴜᴀʟɪᴛʏ ᴀɴꜱᴡᴇʀ


ᎪᏞᏞ ͲᎻᎬ ᏴᎬՏͲ :)
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Answer 1

$\large{\red{\underline{\underline{\textsf{\maltese\:{\red{Answer :}}}}}}}$

$\sf{\color{blue}{▶Steps \: to \: reduce \: friction◀}}$

$\sf{\color{maroon}{☞By \: polishing - }}$

• ᴘᴏʟɪꜱʜɪɴɢ ᴀ ʀᴏᴜɢʜ ꜱᴜʀꜰᴀᴄᴇ ꜱᴍᴏᴏᴛʜᴇɴꜱ ɪᴛ ᴀɴᴅ ʀᴇᴅᴜᴄᴇꜱ ꜰʀɪᴄᴛɪᴏɴ .

$\sf{\color{green}{☞By \: lubrication- }}$

• ꜰʀɪᴄᴛɪᴏɴ ɪꜱ ᴅᴇᴄʀᴇᴀꜱᴇᴅ ʙʏ ʟᴜʙʀɪᴄᴀᴛɪɴɢ ꜱᴜʀꜰᴀᴄᴇꜱ ᴡɪᴛʜ ᴏɪʟ , ɢʀᴇᴀꜱᴇ ᴏʀ ɢʀᴀᴘʜɪᴛᴇ . ᴛʜᴇ ꜱʟɪᴅɪɴɢ ꜱᴜʀꜰᴀᴄᴇꜱ ᴛʜᴇɴ ʜᴀᴠᴇ ᴀ ᴛʜɪɴ ʟᴀʏᴇʀ ᴏꜰ ᴛʜᴇ ʟᴜʙʀɪᴄᴀɴᴛ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ꜱᴜʀꜰᴀᴄᴇꜱ ᴀɴᴅ ᴛʜᴇ ʟᴜʙʀɪᴄᴀɴᴛ ʟᴀʏᴇʀ ᴡʜɪᴄʜ ɪꜱ ᴍᴜᴄʜ ʟᴇꜱꜱ .

$\sf{\color{red}{☞By \: streaming \: to \: reduce \: fluid \: friction- }}$

• ꜰʟᴜɪᴅꜱ ꜱᴜᴄʜ ᴀꜱ ᴡᴀᴛᴇʀ ᴀɴᴅ ᴀɪʀ ᴀʟꜱᴏ ᴇxᴇʀᴛ ꜰʀɪᴄᴛɪᴏɴ ᴏɴ ᴏʙᴊᴇᴄᴛꜱ ᴍᴏᴠɪɴɢ ᴛʜʀᴏᴜɢʜ ᴛʜᴇᴍ . ᴛʜɪꜱ ꜰʀɪᴄᴛɪᴏɴᴀʟ ꜰᴏʀᴄᴇ ᴛʜᴀᴛ ꜰʟᴜɪᴅꜱ ᴇxᴇʀᴛ ᴏɴ ᴏʙᴊᴇᴄᴛꜱ ɪꜱ ᴄᴀʟʟᴇᴅ ᴅʀᴀɢ .

$\sf{\color{blue}{☞By \: using \: wheels \: and \: balls \: bearing \: - rolling \: friction \: - }}$

• ᴡʜᴇɴ ᴀ ꜱᴘʜᴇʀɪᴄᴀʟ ᴏʀ ᴄʏʟɪɴᴅʀɪᴄᴀʟ ᴏʙᴊᴇᴄᴛ ʀᴏʟʟꜱ ᴏɴ ᴀ ꜱᴜʀꜰᴀᴄᴇ , ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ɪᴛ ᴇɴᴄᴏᴜɴᴛᴇʀꜱ ɪꜱ ᴄᴀʟʟᴇᴅ ʀᴏʟʟɪɴɢ ꜰʀɪᴄᴛɪᴏɴ . ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴛʜᴀᴛ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴇɴᴄᴏᴜɴᴛᴇʀꜱ ᴡʜᴇɴ ɪᴛ ꜱʟɪᴅᴇꜱ ᴏᴠᴇʀ ᴀ ꜱᴜʀꜰᴀᴄᴇ ɪꜱ ᴄᴀʟʟᴇᴅ ꜱʟɪᴅɪɴɢ ꜰʀɪᴄᴛɪᴏɴ .

$\huge \mathtt \purple{@VioletMoon}$

Answer 2

The various methods of reducing friction are as follows:

• Lubricants like petroleum products can be used to reduce the friction between moving parts of machines. This helps to reduce wear-tear of the parts, also helps to reduce heat generation.

• Ball-bearings can be used to reduce friction because rolling friction is less than sliding friction.

• We can reduce the undulations and roughness between the two surfaces by polishing the surfaces with the sandpaper.

• The shape of the material can be made streamlined such that it provides least resistance to flow of any fluid. This will also reduce the resistance.

$\star$ Hope It Helps.