Question

Qᴜᴇꜱᴛɪᴏɴ:-


ᴀ ʙᴏx ᴏꜰ 50ᴋɢ ɪꜱ ʟɪꜰᴛᴇᴅ ʙʏ ᴀ ᴍᴀɴ ᴏꜰ ᴍᴀꜱꜱ 60ᴋɢ ᴛᴏ ᴀ ʜᴇɪɢʜᴛ ᴏꜰ 50ᴍ. ᴄᴀʟᴄᴜʟᴀᴛᴇ
ᴛʜᴇ ᴡᴏʀᴋ ᴅᴏɴᴇ ʙʏ ᴛʜᴇ ᴍᴀɴ.​

Answer 1

Explanation:

here is the answer in the pic

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Answer 2

Given:-

• A box of 50 kg lifted by a man of mass 60 kg to a height of 50 m.

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To find:-

• Work done by the man.

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Solution:-

★ In this question we have given that a box of 50 kg lifted by a man of mass 60 kg to a height of 50 m. We have to find out the work done by the man. Let's do it.

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Here,

• Mass of box = 50 kg
• Mass of man = 60 kg
• Total mass = 50 + 60 = 110 kg

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According to the question,

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Firstly,

• Finding the force.

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⇢ Force = (110 × 9.8)N

⇢ Force = 1078 N

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Now,

• Finding the work done by the man.

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⇢ F × S (s = height lifted)

⇢ 1078 × 50

⇢ 53900 Joules

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Hence,

• The work done by the man is 53900 J.