Please answer the following question
#12
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If you have any doubt, you are most welcome.
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Divyankasc:
Can you please explain me third last and second last step again
i have equate the energies at both points...now 2mgR- mgR -mgRsin= mgR-mgRsin = mgR(1-sin) and this is equals to 1/2 mv squared ...so finally we got that
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Actually in this question,numerator and denominator both is increased by 10 then the fraction becomes 5/7
Let the numbers be 3x and 5x
Ratio will be 3x/5x
now,
(3x+10)/(5x+10) = 5/7
⇒21x +70 = 25x +25
⇒4x = 20
⇒x = 5
So, the numbers will be 3×5= 15 and 5×5 = 25
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