Question

a
A boy does 400 J of work in lifting
a suitcase to the first floor in 30 sec
How much power does he spent ?
.​

Answer 1

Explanation:

The formula used to get the answer is p= w/t

So let's do it p= 400/30

= 13.33 power spent

Answer 2

Aɴsᴡᴇʀ:

• The power spent by the boy = 13.33 watts

Gɪᴠᴇɴ:

• A boy does 400 J of work in lifting a suitcase to the first floor in 30 seconds.

Nᴇᴇᴅ ᴛᴏ ғɪɴᴅ:

• The power spent by the boy = ?

Solution:

Fᴏʀᴍᴜʟᴀ ᴜsᴇᴅ ʜᴇʀᴇ:

• Power = Workdone/Time

Pᴜᴛᴛɪɴɢ ᴛʜᴇ ᴠᴀʟᴜᴇs:

➥ Requried Power = 400/30

➥ Required Power = 40/3

➥ Required Power = 13.33

Tʜᴇʀᴇғᴏʀᴇ

• The power spent by the boy is 13.33 Watts.

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