Q. 374.0( 8 Votes )

Why does a sharp knife cut objects more effectively than a blunt knife?

Answer :

We know that Pressure is inversely proportional to area.

So, smaller area will exert more pressure, thus a sharp knife has small area that comes in contact with the object, so more pressure can be applied on the object. Whereas a blunt knife has more area than a sharp knife and the pressure exerted by the blunt knife will be less as compared to that of a sharp knife.


Therefore it becomes easy to cut objects with a sharp knife than a blunt knife.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Get to Know About Kepler's LawGet to Know About Kepler's LawGet to Know About Kepler's Law47 mins
Lakhmir Singh | Part1 (Gravitation)Lakhmir Singh | Part1 (Gravitation)Lakhmir Singh | Part1 (Gravitation)44 mins
Variation of Acceleration due to GravityVariation of Acceleration due to GravityVariation of Acceleration due to Gravity39 mins
NCERT | Gravitation (Part1)NCERT | Gravitation (Part1)NCERT | Gravitation (Part1)43 mins
What is Upthrust and Buoyancy?What is Upthrust and Buoyancy?What is Upthrust and Buoyancy?40 mins
Quiz | GravitationQuiz | GravitationQuiz | Gravitation9 mins
Know More About Archimedes PrincipleKnow More About Archimedes PrincipleKnow More About Archimedes Principle49 mins
Become a Master in Universal Law of Gravitation !!Become a Master in Universal Law of Gravitation !!Become a Master in Universal Law of Gravitation !!47 mins
Foundation | Most Challenging Numericals on GravitationFoundation | Most Challenging Numericals on GravitationFoundation | Most Challenging Numericals on Gravitation38 mins
Gravitation Part-1Gravitation Part-1Gravitation Part-141 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :