Question

A mass hangs from a massless string and swings around in a horizontal circle. The length of the string is very slowly increased (or decreased). Let θ, ℓ, r, and h be defined as shown.
(a) Assuming θ is very small, how does r depend on ℓ?
(b) Assuming θ is very close to π/2, how does h depend on ℓ?

Answer 1

what are l and h?

Answer 2

which angle is theta?

Answer 3

please help me::::----((((((