College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 7

Suppose the simple pendulum in Exercise were released from an angle of 60°. (a) What would be the speed of the bob at the bottom of the swing (b) To what height would the bob swing on the other side (c) What angle of release would give half the speed of that for the 60° release angle at the bottom of the swing
Exercise
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 (Fig.). (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.)

FIGURE A pendulum swings See Exercise.