Question

A particle is moving in a circular path of radius r. What would be the displacement after two complete rounds

Answer 1

displacement is always zero in circular path

Answer 2

$\huge{\red{\fbox{\fbox{Question}}}}$

ᴀ ᴘᴀʀᴛɪᴄʟᴇ ɪs ᴍᴏᴠɪɴɢ ɪɴ ᴀ ᴄɪʀᴄᴜʟᴀʀ ᴘᴀᴛʜ ᴏғ ʀᴀᴅɪᴜs ʀ. ᴡʜᴀᴛ ᴡᴏᴜʟᴅ ʙᴇ ᴛʜᴇ ᴅɪsᴘʟᴀᴄᴇᴍᴇɴᴛ ᴀғᴛᴇʀ ᴛᴡᴏ ᴄᴏᴍᴘʟᴇᴛᴇ ʀᴏᴜɴᴅs?

$\huge{\sf{\purple{Soluti∅n-}}}$

$\huge\bold\red{Given}$

ɑfter hɑlf the circle, the pɑrticle will reɑch the diɑmetricɑlly opposite point i.e., from point ɑ to point 6. ɑnd we know displɑcement is shortest pɑth between initiɑl ɑnd finɑl point.

$\huge\bold\pink{So,}$

Displɑcement ɑfter hɑlf circle = ɑB=Oɑ + OB [v Given, Oɑ ɑnd 06 = r]

Hence, the displɑcement ɑfter hɑlf circle is 2r.

$\huge\red{♡♡♡♡}$