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A block of mass m is suspended from a fi...

A block of mass m is suspended from a fixed support with the help of a cord. Another identical cord is attached to the bottom of the block. Which of the following statement is/are true?

A

If the lower cord is pulled suddenly, only the upper cord will break.

B

If the lower cord is pulled suddenly, only the lower cord will break.

C

If pull on the lower cord is inceased gradually, only the upper cord will break.

D

If pull on the lower cord is increased gradually, only the upper cord will break.

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The correct Answer is:
B, D
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