Physics, asked by santoshmishra98430, 7 months ago

A block of iron of mass 7.5 kg and of dimension 12cm× 10cm × 8cm is kept on a table top on its base of side 12cm × 8cm. calculate thrust

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Answered by mbakshi37
1

Answer:

7812.5 Pascals

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Answered by Anonymous
1

 \bold{(a) \: thrust}

 \bold{Force  \: =  \: Mass  \: × \:  acceleration  \: due \:  to \:  gravity} \\  \bold{ =  \: 7.5 \times 10} \\  \bold{ = 75N \: .... \:  \: ans}

 \bold{(b) \: pressure  \: exerted \:  on  \: tabletop}

 \bold{Area \:  of \:  the \:  tabletop \:  =  \: 12 × 8} \\  \bold{ \:  \:  \:  = 96 {cm}^{2} \:  to \:  {m}^{2} } \\  \bold{ \:  \:  \:  =  \:  \frac{96}{1000} {m}^{2}  } \\  \bold{ \:  \:  \:  =  \: 0.0096 {m}^{2} }

 \bold{Therefore,}

 \bold{Pressure \:  =  \:  \frac{force}{area} } \\  \bold{ \: \:  \:  \:  \:  \:   \:  \:  =  \:  \frac{75}{0.0096} } \\  \bold{ \:  \:  \:  \: \:  =  \:  \frac{75 \times 10000}{96}  } \\  \bold{ \:  \:  \:  \: \:  =  \:\frac{ \cancel{75}  \:  \:  \: ²⁵ \times  \cancel{10000} \:  \: ⁶²⁵}{ \cancel{96} \:  \: ²} } \\  \bold{  \:  \:  \:  =  \: \frac{25 \times 625}{2} } \\  \bold \red{ \:  \:  \:  =  \: 7182.5 \: Pa \:  \: ....ans}

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