Question

Q1) Complete the following sentences: 

a. It is easier to cut with a sharp knife than with a blunt one  because    

 . 


b. Porters place a round piece of cloth on their heads, when they have to carry heavy loads because  . 

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Answer 1

Answer:

1. It is easier to cut with a sharp knife than with a blunt one because the area on which force is exerted with a sharp knife is very small. Thus, it is easier to cut with the former than with the latter.
2. Porters place a round piece of cloth on their heads, when they have to carry heavy loads because  the pressure is inversely proportional to the area.