A simple pendulum has a length of 0.75 m and a bob with a mass of 0.15

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A simple pendulum has a length of 0.75 m and a bob with a mass of 0.15 kg. The bob is released from an angle of 25° relative to a vertical reference line (▼ Figure 5.31).

(a) Show that the vertical height of the bob when it is released is h = L(1 − cos 25°).

(b) What is the kinetic energy of the bob when the string is at an angle of 9.0°?

(c) What is the speed of the bob at the bottom of the swing? (Neglect friction and the mass of the string.)image text in transcribed

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