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The weight of the givensolid cylinder ro...

The weight of the givensolid cylinder rodis 2512 N.
The density of the body is `"________"` Kg `m_(-3)`.
`(take g =10 m s_(-2))`

A

2512

B

`25 xx 12`

C

`10^3`

D

`10^6`

Text Solution

Verified by Experts

The correct Answer is:
D
Volume `=pi xx ("radius")^2 xx "height"`
`=pi xx (0.02)^2 xx 0.2=25.12 xx 10^(-5) m^(3)`
Weight `=m xx g`
`"Mass "=("weight")/g=(2512)/(10)=251.2kg`
`"Density "=("mass")/("volume")=(251.2)/(25.12 xx 10^(-5))=(25.12 xx 10^1)/(25.12 xx 10^(-5))`
`=106"kg m"^(-3)`
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