Need Help For Mechanics!! (1 Viewer)

[Ridhwan]

how do u do this??

the(water) drops shaken off the rim of a rotating umbrella meet the ground in a circle of radius r meters. the rim is a circle of diameter 1 m and is 1.5 m above the ground. its rotating with an angular velocity of 4 pie. find the radius r.

thnx

 

[Mumma]

When the water drop flies off, it undergoes projectile motion.
It doesnt have any vertical velocity, but it has horizontal velocity v = rw, so v = 2Pi.
Do projectile motion from there with those starting conditions. Find how much it travels. Might have to use the distance formula as well, let me try work this out. Do you have the answer?

 

[Ridhwan]

thnx bro.....na i dont hav da worked solutions bt i hav da answer.....check patels book man....9F question 11 i think...haha..lolz....