A 1.5 m high person is holding a 20 kg trunk on his head and is standing at a roadways bus-terminal. How much work is done by the person?
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Zᴇʀᴏ. Aꜱ ᴅɪꜱᴘʟᴀᴄᴇᴍᴇɴᴛ ɪꜱ ᴢᴇʀᴏ......
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Zero. As displacement is zero.
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