A child on a swing whose 3.2m long chains make a maximum angle of 50 degrees with the vertical. What is the child's maximum speed?
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1] Calculate the height difference between when the chain is at the 50 degree angle and when it is vertical
2] THat height difference gives you a difference in gravitational potential energy; PE = mgh
3] Set PE = Mgh = KE = .5MV^2; solve for V = SQR[2gh]
2] THat height difference gives you a difference in gravitational potential energy; PE = mgh
3] Set PE = Mgh = KE = .5MV^2; solve for V = SQR[2gh]