Question

One end of a string of length 1.0 m is tied to a body of mass 0.5 kg. It is whirled in a vertical circle as shown in fig. If the angular frequency of the body is 4 rad s–1, what is the tension in the strong when the body is at the topmost point A? Take g = 10 ms–2.

                                                                       

Solution

Correct option is

3 N

 

Speed of the body (v) = Rω = 1.0 × 4 = 4 ms –1.  

Referring to fig, we find that, when the body is at the topmost point A, the tension in the string is  

                            

                                   

  

 

      

SIMILAR QUESTIONS

Q1

A stone, tied to the end of a string of length 50 cm, is whirled in a horizontal circle with a constant speed. If the stone makes 40 revolutions in 20 s, what is the speed of the stone along the circle?

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Q3

 

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Q4

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Q5

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Q6

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Q7

 

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Q8

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Q9

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Q10

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