Q.

A mass of 10 gm is suspended by a string and the entire system is falling with a uniform acceleration of 400 cm/sec2.The tension in the string will be g=980cm/sec2.

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a

5,800 dyne

b

9,800 dyne

c

11,800 dyne

d

13,800 dyne

answer is A.

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Detailed Solution

T=m(g−a)=10(980−400)=5800 dyne
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A mass of 10 gm is suspended by a string and the entire system is falling with a uniform acceleration of 400 cm/sec2.The tension in the string will be g=980cm/sec2.