Question

one day, while helping her mother in the kitchen,Tanvi tried to cut an apple with a knife but could not accomplish the task. Her mother saw that she was trying to cut with the blunt side of the knife. name and define the physical quantity involved in the above example and its SI unit also.

Answer 1

the physical quantity is help which is from her mother towards her
tanvi is not able to cut the applr because she cut from blunt side of knife
according to formula
P=F/A
when area increases pressure decreases
SI unit of pressure is pascal or Nm^-2