Question

The area of cross section of end A of a U tube is 0.01 m² and the area of cross section of end B is 0.1 m². If 100N force is applied on the piston A, find out the pressure exerted in liquid? ​

Answer 1

As we know that pressure head remains constant at a particular horizontal level

A

1

=0.01m

2

A

2

=1m

2

F

1

=?

P

1

=P

2

F2=20000N

F

2

F

1

=

A

2

A

1

F

1

=F

2

×

A

2

A

1

=20000×

1

0.01

=200N

Answer 2

Answer

As we know that pressure head remains constant at a particular horizontal level

A 1 =0.01m ^2

A 2 =1m ^2

F 1 =?

F2=100N

F 1 =F 2 × A 2 = A 1

=100× 0.01

=1 N

F1 = 1 N ans.