Decrease in area increases the pressure ,keeping thrust constant. Write any two application to support your answer.

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Solution

Dear student,

$P r e s s u r e = t h r u s t / a r e a s o b y d e c r e a \sin g a r e a, w e c a n i n c r e a s e t h e p r e s s u r e A p p l i c a t i o n : 1 . I n c a s e o f k n i f e, i f t h e e d g e i s s h a r p, t h a t m e a n s t h e s u r f a c e a r e a o f t h e e d g e i s s m a l l, t h e n w i t h s a m e t h u r s t w e c a n g e n e r a t e m o r e p r e s s u r e . T h u s w i t h s h a r p k n i v e s, i t s e a s y t o c u t s o m e t h i n g i n c o m p a r i s i o n t o t h e b l u n t k n i f e . 2 . N a i l s w i t h p o i n t e d e n d s a r e e a s i e r t o p e n e t r a t e i n w a l l, a s t h e s u r f a c e a r e a d e c r e a s e s i n c a s e o f p o i n t e d e d g e, t h e p r e s s u r e a t t h e t i p i n c r e a s e s f o r a c o n s \tan t t h r u s t .$
Regards,

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