A simple pendulum consists of a small object of mass m= 0.150 kgsuspended from a support stand by a light string. The string has alength L= 0.750 m. The string has an initial position given by θ=65.0° relative to the vertical. The pendulum is released from rest.Air resistance is negligible during the subsequent motion of thependulum.
a)Calculate the work done by gravity on the pendulum as it movesfrom its initial position to the lowest point of its semicirculararc. b)Calculate the speed of the object as it moves through thelowest point of its semicircular arc.
c)Calculate the tension in the string right as the object ismoving through the lowest point of its semicircular arc.
d)Repeat part b) using the conservation of total mechanicalenergy. (Is the total mechanical energy of the pendulumconserved?)
