Test:108 QNo:9

two bodies have a mass ratio m. They are thrown from a tower to another with the same initial conditions. The ratio of their heights is also m. What is the ratio of their times of flight!?

6 Answers

1
naveen1234 gp ·

how come d ratio of max heights is m?

1
Ankur Jay ·

Two bodies have a mass ratio and height ratio as m.

Here mass ratio is irrevelant, so we ignore it. Kinematics does not deal with mass.

Height ratio is m.

Hence, H1 / H2 = U12 / U22

where H means height and U means initial speed.

Also, U1 / U2 = T1 / T2

From this, we can infer that Height is directly proportional to the square of time.

Hence,

H1 / H2 = M (ratio) = T12 / T22

This means that the Time ratio is the square root of Height ratio.

That is,

T1 / T2 = √M

Hence all the given options in the question were wrong.

49
Subhomoy Bakshi ·

absolutely...

1
Arka Halder ·

agree with ankur.

1
neha_singh123 ·

i also solve the similar question and got the same result ,,,,,,,ankur is correct

1
saswati22 ·

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