2 source of sound A AND B produces waves of 350hz they vibrate under the influence of these 2 waves if amplitudes at the point P produced by the 2 waves os 0.3mm and o.4 mm then resultant amplitude of point AP-BP =25cm and velocity of sound is 350mpers
Answers
Explanation:
Simple pendulum: A simple pendulum consists of a point
mass m at the end of a massless string of length L. Its
motion is approximately simple harmonic for suffi-
ciently small amplitude; the angular frequency, fre-
quency, and period then depend only on g and L, not on
the mass or amplitude. (See Example 14.8.)
(14.32)
(14.33)
T = (14.34)
2p
v = 1
ƒ = 2pA
L
g
ƒ = v
2p = 1
2p A
g
L
v = A
g
L
Periodic motion: Periodic motion is motion that repeats
itself in a definite cycle. It occurs whenever a body has a
stable equilibrium position and a restoring force that
acts when it is displaced from equilibrium. Period T is
the time for one cycle. Frequency is the number of
cycles per unit time. Angular frequency is times
the frequency. (See Example 14.1.)
2pv
ƒ
(14.1)
v = 2pƒ = (14.2)
2p
T
ƒ = 1
T
T = 1
ƒ
Fx
ax
x x
n
mg
y
n
mg
y
Fx
ax
x
n
mg
y
x = 2A x = 0
x , 0 x . 0
x = A
x
2T O
A
T t
x
2A
Energy
x
E 5 K 1 U
2A O A
U
K
u tz
Balance wheel Spring
Spring torque tz opposes
angular displacement u.
L
T
mg sin u
mg
mg cos u
u
Physical pendulum: A physical pendulum is any body
suspended from an axis of rotation. The angular fre-
quency and period for small-amplitude oscillations are
independent of amplitude, but depend on the mass m,
distance d from the axis of rotation to the center of grav-
ity, and moment of inertia I about the axis. (See
Answer:
discussion is about BC andDC