Question

a pendulum completes 4 oscillation in 7s.find time period.find the length of the pendulum(given g=9.8m/s2)​

Answer 1

Answer:

Time period us 4/7 sec

and length is 0.759 meters

see I am not sure ,if this is the correct answer then please let me know

Explanation:

4 oscillation in 7 second

therefore one oscillation in 4/7 seconds

this the time period (t)

now use the formula for time period

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

then l (length) is 0.759 meters