Physics, 17.12.2019 17:31 aons

Acar with a hanging mass attached to the ceiling starts from rest up a hill and the driver never presses on the gas or the brakes. once reaching the bottom of the hill the road levels out horizontally for a short distance then curves around a flat 30-m-radius circular path. while the car is rounding the curve the hanging mass makes an angle of 30˚ with respect to the vertical. if you assume no energy is lost to friction, what height must the car have started from?

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