Question

Compare the pressure given by a block of weight 100 N on a surface 200 square meter and another surface of 20 square meter respectively.​

Answer 1

u

given data,

We will convert 2.5cm square to meter square =0.00025

force=500N

area=0.00025m

Pressure is given as;

P=

A

F

=

0.00025m

500N

P=2×10

6

Pa

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Answer 2

In the vertical direction, weight is balanced by frictional forces.
As the block is in equilibrium balance forces are in horizontal and vertical direction.
For the system of blocks (A+B)
F=N
for block A, f
A
​
=20N
for block B, f
B
​
=f
A
​
+100=