Why does a sharp knife enable us to cut through things more easily?

The pressure exerted is lesser when the same force is used

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The pressure exerted is greater when the same force is used

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

The sharp edge can pass through the material slowly

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The sharp edge is not felt when cutting through the material

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B The pressure exerted is greater when the same force is used
The pressure is defined as the force per unit area. i.e $P = F / A$
So the pressure depends on the force F and area A of contact.
If force is constant, the pressure is only depends on the area.
A sharp knife edge has small area of contact and less area of contact will produce the more pressure.
Thus, the option B can be correct.

Suggest Corrections

Similar questions

Q. A sharp knife can cut objects more easily compared to a blunt knife because a sharp knife applies more pressure on the object.

A sharp-edged knife cuts more easily than a spoon even on the application of a greater force. What is the reason for this?

Q. Fill in the blank.

It becomes _______ to cut vegetable with a sharp edged knife because the pressure is _______.

A chef while cooking cuts his hand with a sharp-edged knife, but to his surprise, his hand did not cut with a spoon even on the application of a greater force. Why did it cut from a knife for a smaller force?

A chef while cooking, cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What is the reason for this difference?

Join BYJU'S Learning Program