A mass hangs from a massless string and swings around in a horizontal circle, as shown in
Question:
A mass hangs from a massless string and swings around in a horizontal circle, as shown in Fig. The length of the string is very slowly increased (or decreased). Let ?, ?, r, and h be defined as shown.
(a) Assuming ? is very small, how does r depend on ??
(b) Assuming ? is very close to ?/2, how does h depend on ??
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Consider the angular momentum L relative to the support point P The forces on the mass are the tensi...View the full answer
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