Explanation:
SUPONIENDO QUE LA ACELERACIÓN DE LA GRAVEDAD ES
USANDO LA SEGUNDA LEY DE NEWTON:
<em>m</em> = 80.0 N/ = 8.16 kg
What are the bonds that connect water molecules?
2 answers:
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Answer:
Explanation:
This is the case of forced oscillation . The pendulum having the same or matching time period or angular frequency with that of angular frequency of external periodic force , will be in resonance having largest amplitude.
Angular frequency of pendulum having length .9 m
=
l = .9
angular frequency
=
= 3.33 rad / s
If we calculate angular frequencies of pendulum of all lengths given , we will find that other lengths do not give angular frequency falling between 2 and 4 radian . So only pendulum having length of .9 m will have vibration of maximum amplitude.
Answer:
(a) 498.4 Hz
(b) 442 Hz
Solution:
As per the question:
Length of the wire, L = 1.80 m
Weight of the bar, W = 531 N
The position of the copper wire from the left to the right hand end, x = 0.40 m
Length of each wire, l = 0.600 m
Radius of the circular cross-section, R = 0.250 mm =
Now,
Applying the equilibrium condition at the left end for torque:
The weight of the wire balances the tension in both the wires collectively:
Now,
The fundamental frequency is given by:
where
(a) For the fundamental frequency of Aluminium:
where
(b) For the fundamental frequency of Copper:
where