The string passes over a pulley, a distance l=1.52 m away, and weights are hung from this end, the figure (Figure 1) .

Part A

What mass m_1 must be hung from this end of the string to produce one loop of a standing wave? Assume the string at the oscillator is a node, which is nearly true.

Part B

What mass m_2 must be hung from this end of the string to produce two loops of a standing wave?

Part C

What mass m_3 must be hung from this end of the string to produce five loops of a standing wave?