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A pendulum consists of an object of mass m = 1.65 kg swinging on a massless string of length l. The object has a speed of 1.97 m/s when it passes through its lowest point. If the speed of the object is 0.87 m/s when the string is at 70° below the horizontal, what is the length of the string?
The relavent info is
Ek= 1/2 mv^2
Ep= mgh
The relavent info is
Ek= 1/2 mv^2
Ep= mgh