Question

Why is friction often undesirable? ​

Answer 1

Heya!❤️

Friction is quite often undesirable as it reduces the efficiency of machines.

Hope this helps

@adiba31✌️❤️✌️

Answer 2

Explanation:

Friction is not desirable in moving parts of engines of vehicles. Even with radiator full of cold water the engine can overheat and slow down its travel. The driver is forced to stop and restthe vehicle.

It is also not desirable when sliding heavy objects up the inclined plane. More force is needed to raise the load to a desired height..

➧ Exᴀᴍᴘʟᴇꜱ:-

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[1] Aᴇʀᴏᴘʟᴀɴᴇꜱ ᴄᴀɴ'ᴛ ғʟʏ ᴡɪᴛʜᴏᴜᴛ ᴍᴏᴠɪɴɢ ᴏɴ ᴛʜᴇ ɢʀᴏᴜɴᴅ (Fʀɪᴄᴛɪᴏɴᴀʟ Fᴏʀᴄᴇ).

[2] ꜱʜɪᴘ ᴄᴀɴɴᴏᴛ ᴍᴏᴠᴇ ᴡɪᴛʜᴏᴜᴛ ғʀɪᴄᴛɪᴏɴ.

[3] Fᴏʀ ᴇʀᴀꜱɪɴɢ ᴀ ᴍɪꜱᴛᴀᴋᴇ, ᴛʜᴇ ʀᴜʙʙᴇʀ ʜᴀꜱ ᴛᴏ ꜱʜᴏᴡ ғʀɪᴄᴛɪᴏɴ ᴡɪᴛʜ ᴛʜᴇ ᴘᴀᴘᴇʀ.

➠ Bᴜᴛ ᴅᴜᴇ ᴛᴏ ғʀɪᴄᴛɪᴏɴ, ᴛʜᴇʀᴇ ɪꜱ ᴀ ʜᴜɢᴇ ᴀᴍᴏᴜɴᴛ ᴏғ ᴇɴᴇʀɢʏ ɪꜱ ᴡᴀꜱᴛᴇᴅ. Oɴᴇ ᴡᴀʏ ᴛᴏ ᴅɪꜱᴄʀɪᴍɪɴᴀᴛᴇ ɪᴛ ɪꜱ:

➠ Pᴇᴏᴘʟᴇ ᴄᴀɴ ɢᴇᴛ ɪɴᴊᴜʀᴇᴅ ᴛʜᴇᴍꜱᴇʟᴠᴇꜱ, ɪғ ᴛʜᴇʏ ʀᴜʙ ᴛʜᴇɪʀ ʜᴀɴᴅꜱ ʜᴀʀᴅ ᴏɴ ғʟᴏᴏʀꜱ ᴏʀ ꜱʜᴀʀᴘ ɪᴛᴇᴍꜱ.

hope it helps u