# Question: A simple pendulum has a length of 0 75 m and

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 relative to a vertical reference line (Fig. 5.34).

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

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

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

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

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

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

**View Solution:**## Answer to relevant Questions

Suppose the simple pendulum in Exercise 54 were released from an angle of 60o. In 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 relative to a ...A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10 m, as illustrated in Fig. 5.27a. If the total mass of the sled and the girl is 35 kg and the coefficient of kinetic ...A pump lifts 200 kg of water per hour a height of 5.0 m. What is the minimum necessary power output rating of the water pump in watts and horsepower? A construction hoist exerts an upward force of 500 N on an object with a mass of 50 kg. If the hoist started from rest, determine the power it expended to lift the object vertically for 10 s under these conditions. Does the conservation of momentum follow from Newton’s third law?Post your question