Page 20 - WAVES

e) Determine the frequency of the pendulum when the length of pendulum, L is increased to
80 cm.
0.563 Hz

f) After oscillating number of times, the pendulum finally stops. Why?

Mengalami pelembapan

g) Sketch a displacement- time graph to show the oscillations of the pendulum untul it stops.

Displacement

Time

h) State the types of energy of pendulum when it located

i. at B
Kinetic Energy

ii. at C

Gravitational Potential Energy

iii. between B and C

Kinetic Energy and Gravitational Potential Energy

20