Which of the following is not an example of muscular force?
A. a porter carrying a load on a wheel-barrow.
B. an apple falling from a tree.
C. a child riding a bicycle.
D. a person drawing water from a well.
Answer:B
Which of the following is not an example of muscular force?
A. a porter carrying a load on a wheel-barrow. B. an apple falling from a tree. C. a child riding a bicycle. D. a person drawing water from a well.