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Grade: 12th pass

                        

The water drops fall at regular intervals from a tap 5 m above the ground. The fifth drop is leaving the tap at an instant when the first drop touches the ground. How far above the ground is the third drop at that instant? (Take g = 10 m/s -1 )

one year ago

Answers : (1)

Arun
25256 Points
							
Height =h=5m
s=ut+1/2at²
5=0+1/2aT²-----(1)
Time taken by second drop will be T/2
∴ its distance from tap
h=0+1/2(aT²)/4       ------------(2)
divide equ (ii) by equ (1)
h/5=1/4
h=1.25m
∴ H-h=5-1.25=3.75m
 
one year ago
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