A fountain jet situated at a height of 11.25 m above the ground projects water droplets in all directions with velocity of 20 m/s. Calculate the maxim
A fountain jet situated at a height of 11.25 m above the ground projects water droplets in all directions with velocity of 20 m/s. Calculate the maximum distance (in m) on ground reached by any water droplet
A. 50 m
B. 100 m
C. 75 m
D. 25 m
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Correct Answer - A
If we take both discs as system. There is No external torque on system.
implies Angular momentum should be conserved.
`implies (2mr^(2))/(2)omega=[(2mr^(2))/(2)+(mr^(2))/(2)]omegaimplies mr^(2)omega_(0)=(3)/(2)mr^(2)omegaimpliesomega=(2omega_(0))/(3)`
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