Question

what is the role of string in simple pendulum also state what is the function of bob 2) write the chemical formula -- a) aluminium chloride b) ammonium hydroxide c) sulphurus acid d) calcium acid

Answer 1

Aluminium chloride - alcl3

Ammonium hydroxide - nh4oh

Sulphurus acid - h2so3

Calcium acid - ca(c2h3o2)2

With the help of string a pendulum will continue to oscillate indefinetly with constant amplitude in the vacuum of zero resistance.

In most pendulum clocks rate is adjusted by moving the pendulum up or down in pendulum rod. Bob has a very little effect on period of pendulum but if the Bob is heavy then it helps in moving the pendulum smoothly