We hang a weight of 2 kg on a 20 cm long rope and get a simple pendulum. We force the pendulum to oscillate with frequencies:
In which case will the amplitudes be the largest?
What should be the length of the pendulum so that the frequency is 0.35 Hz and the pendulum will be in resonance?
How many kilogram weights must we hang on the pendulum so that the oscillation frequency is 0.1 Hz?
