Question

2 points
Question 6 Find the length of a
simple pendulum which completes 6
oscillations in 15 s. Take g = 9.8 m/s*s.​

Answer 1

Here is the answer..

Answer 2

6 oscillation in 15 sec

1oscillation in 15/6=2.5sec

$t = 2\pi\sqrt{ \frac{l}{g} }$

$\frac{ {2.5}^{2} \times 9.8 }{4 \times {3.14}^{2} } = l$

$\frac{6.25 \times 9.8}{39.2} = l$

$l = \frac{61.25}{39.2}$

$l = 1.56$

I hope this helps( ╹▽╹ )