Question

A pendulum completes 2 oscillation in 5s.

Answer 1

Answer:

a) 2.5 s

b) 1.55 m

Explanation:

Given :-

Completes 2 oscillation in 5s.

A) Time period = ?

$t \: = \frac{total \: time \: }{total \: no \: of \: oscillation}$

$\frac{5}{2} = 2.5s$

Thus 1 oscillation is completed in 2.5 s.

B) If g = 9.8 ms−², find its length.

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

= 2.5s

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

Length = ?

$\frac{ {t}^{2} }{4\pi {}^{2} } \times g$

$\frac{2.5}{ {4}^{2} } \times 9.8 = 1.55m$

Thus the length of g = 9.8 ms −² = 1.55m

Hope it helps u.......

STAY SAFE, STAY HEALTHY AND BLESSED .

HAVE A MARVELOUS DAY AHEAD !

THANK YOU !