Question

A wooden block of 2 m2 area, exerts 50 N on
the ground. What is the pressure applied by
the block on the ground?​

Answer 1

Answer:

Explanation:

Mass of the wooden block, m=5kg

Thrust due to wooden block,

Mg=5kg×9.8ms  

−2

=49N

(a) Surface area of 20cm×10cm surface,

A=(20×10)cm  

2

 

=(0.2×0.1)m  

2

 

=0.02m  

2

 

P=  

A

mg

​  

 

P=  

0.02m  

2

 

49N

​  

=  

0.02

49

​  

Nm  

−2

 

or Pressure, P=2450Nm  

−2

.

(b) Surface area of 40cm×20cm surface,

A=(40×20)cm  

2

 

=(0.4×0.2)m  

2

=0.08m  

2

 

P=  

0.08m  

2

 

49N

​  

=  

0.08

49

​  

Nm  

−2

 

or Pressure, P=612.5Nm  

−2

.