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avatar+1493 

What is the frequency of motion of a 0.50 m long pendulum?

0.32 Hz

0.70 Hz

1.4 Hz

0.81 Hz

 

im not sure on this one

 Dec 3, 2019
 #1
avatar+1493 
+1

my teacher said it isnt 0.70 , i know that forsure

 Dec 3, 2019
 #2
avatar+19806 
+1

Period = 2 pi sqrt(l/g) = 2 pi sqrt (.5/9.81) = 1.419 sec

Frequency = 1/period = 1/1.419 = .70 hz

 Dec 3, 2019
 #3
avatar+106539 
+1

EP's  answer is correct....

 

See  this, Jenny   :  https://www.answers.com/Q/What_is_the_frequency_of_a_pendulum

 

 

 

cool cool cool

 Dec 3, 2019
 #4
avatar+1493 
+1

hmm, im not quite sure then but i as well thought it was 0.70 hz

 

what about this one?

 

A 1.0 kg weight suspended from a spring is pulled to 0.25 m below its equilibrium point.

If the spring has a spring constant (k) of 50.0 N/m , at what rate will the mass accelerate when it is released?

200 m/s2

12.5 m/s2

6.5 m/s2

2.7 m/s2

 

2.7 ?

jjennylove  Dec 3, 2019

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