Question

Figure shows two wooden blocks kept on the ground (g = 10ms-2 ). Answer the questions based on figure i) Predict which wooden block will exert more pressure on the ground. Why? ii) Calculate the pressure exerted on the ground by each wooden block. iii) Draw the conclusion from your findings.

Answer 1

Given:

2 wooden blocks of different masses have been kept on the ground.

To find:

• Which block exerts more pressure

• Value of pressure exerted by the blocks

• Conclusion from the findings.

Calculation:

Pressure is a scalar quantity , represented by the ratio of force and the surface area upon which the force acts.

For Block A ( Smaller block):

$pressure = \dfrac{force}{area}$

$= > pressure = \dfrac{125 \times 10}{0.01 \times 0.01}$

$= > pressure = \dfrac{125 \times 10}{ {10}^{ - 4} }$

$= > pressure = 125 \times {10}^{5} \: pascal$

For Block B (larger block):

$pressure = \dfrac{force}{area}$

$= > pressure = \dfrac{175 \times 10}{0.01 \times 0.01}$

$= > pressure = \dfrac{175 \times 10}{ {10}^{ - 4} }$

$= > pressure = 175 \times {10}^{5} \: pascal$

Hence , Block B exerts more pressure on ground as compared to Block A .

Conclusion from the findings:

$\sf{pressure = \dfrac{force}{area} }$

For constant surface area ;

$\sf{ = > pressure \propto force}$

$\sf{ = > pressure \propto ( mass \times g)}$

For constant "g" ;

$\boxed{ \sf{ = > pressure \propto mass }}$

So, pressure is directly proportional to the mass of the body.

Answer 2

Answer:

sorry don't know the answer I was asking the same