A ball is dropped from some height and after first collision with the ground if it reaches 34^ th of its original height, then the \% loss of its energy.

Question

Accepted Answer

Correct answer: A. (a) Let a ball is dropped from height h then initial potential energy U_i= mgh Final height = 34h then final potential energy, U_f= 34 mgh The percentage loss of its energy ( U_f-U_jU_j ) 100= ( 34 mgh- mgh mgh ) 100 \% = 14 100=25 \%

$A ball is dropped from some height and after first collision with the ground if it reaches \frac{3}{4}^{th} of its original height, then the % loss of its energy.$

Solution

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