<p>There is a forest is Italy that has many waterfalls. At one of the waterfalls

Question

<p>There is a forest is Italy that has many waterfalls. At one of the waterfalls, a long rope hangs down from the top of the cliff near the waterfall and has a seat on the bottom. Adventurous visitors could hop onto the seat and swing down into the waterfall. Their starting angle seems to be about 20^o. It takes one of these adventurous people 8 seconds to swing out and back. Estimate the length of the rope and the speed with which they pass through the waterfall.</p>

Explanation / Answer

since 20degrees is small enough we can asssume it to be a simple pendulum case

TIME PERIOD =2(L/g)

8 = 2(l/10)

l= 16.21 m

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