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A child is sitting on a swing. Its minimum and maximum heights from the ground are 0.75 m and 2 m respectively. Its maximum speed will be -

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  1. 10 m/s 
  2. 5 m/s 
  3. 8 m/s  
  4. 15 m/s

Answer (Detailed Solution Below)

Option 2 : 5 m/s 
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Detailed Solution

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Formula Used:

Maximum Speed (v) = 

Here, g is the acceleration due to gravity

H2 is the maximum height

H1 is the minimum height

Application:

We have,

g = 10 (assume)

H2 - H1 = 2 - 0.75 = 1.25 m

Using the above formula:

v = 

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