GATE MT 2019 Q13. A plate of width 100cm and thickness 5cm is a rolled to a thickness 3cm. If the entry velocity is 10 cm s-1, the exit velocity (in cm s-1 rounded off to one decimal place )is ________. Assume no change in the width of the plate.

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Putting the equation whivi= whfvf Where w = width hi = initial thichness hf = final thickness Vi= entry velocity Vf= exit velocity Exit velocity is 16.66 cm/s

Putting the equation whivi= whfvf

See lessWhere w = width

hi = initial thichness

hf = final thickness

Vi= entry velocity

Vf= exit velocity

Exit velocity is 16.66 cm/s

Correct answer is in the range of 16.0-17.4 cm/s. @Arpita Samal described it best. Thank you. Some peripheral lines related to this topic: Using the formula, tfVf=tiVi On substitution of the given values, 10 ×5=Vi×3 Vi= 50/3= 16.66 cm/s

Correct answer is in the range of 16.0-17.4 cm/s. Arpita Samal described it best. Thank you.

Some peripheral lines related to this topic:_{f}V_{f}=t_{i}V_{i}_{i}×3_{i}= 50/3= 16.66 cm/s