A mass of 200 g hangs on a light string of length 80 cm. If the mass is displaced horizontally by a distance of 20 cm and then released, calculate
a. a the frequency of the resulting oscillations. (You may take g=10 Nkg−1 .)
b. b the number of oscillations that there will be in 1 minute.
c. c the maximum speed of the mass.
d. d the total energy of the mass during its oscillations.