A simple pendulum has a period of 17.0s. When the length is shorten by 1.5m, its period is 8.5s. Calculate the original length of the pendulum

Emmanuel24458

2 years ago

t1²/t2² = l1/l2

Since the second length was shorten it becomes L - 1.5 note L i used to minus is the length L
17²/8.5² = L1/L2
289/72.25 = L/L-1.5

Simplify and approximate

bored_panda

1 year ago

using t1²/t2²=L1/L2
since L2 was shortened, it becomes L-1.5
= (17)²/(8.5)²=L/L-1.5
289/72.25=L/L-1.5
cross multiply
72.25L=289(L-1.5)
72.25L=289L-433.5
289L-72.25L=433.5
216.75L=433.5
Divide both sides by 216.75
:. L=2.0m//

BethA1

2 years ago

Explain in details...
I dont really get the rubbish they were drawing there

Gddhhcv

2 years ago

You are correct 2.0m💯

BethA1

2 years ago

please explain...like I mean correct explanation

xmode

3 months ago

Pls is there no shorter method?

aliyujibrinmagaji

2 months ago

Confused

Sensei

2 months ago

question like this you should skip or guess em

mercy12345678ush

2 years ago

N