A block hangs on a spring attached to the ceiling and is pulled down 8 in. below its equilibrium position. After release, the block makes one complete up-and-down cycle in 1.2 sec and follows simple harmonic motion. a. Write a function to model the displacement d (in inches) as a function of the time d (in seconds) after release. Assume that a displacement above the equilibrium position is positive. b. Find the displacement of the block and direction of movement at t = 0.3 sec .
A block hangs on a spring attached to the ceiling and is pulled down 8 in. below its equilibrium position. After release, the block makes one complete up-and-down cycle in 1.2 sec and follows simple harmonic motion. a. Write a function to model the displacement d (in inches) as a function of the time d (in seconds) after release. Assume that a displacement above the equilibrium position is positive. b. Find the displacement of the block and direction of movement at t = 0.3 sec .
Solution Summary: The author compares the quantities with the actual function, that is, d=Amathrmcos5pi 3t.
A block hangs on a spring attached to the ceiling and is pulled down 8 in. below its equilibrium position. After release, the block makes one complete up-and-down cycle in
1.2
sec
and follows simple harmonic motion.
a. Write a function to model the displacement
d
(in inches) as a function of the time
d
(in seconds) after release. Assume that a displacement above the equilibrium position is positive.
b. Find the displacement of the block and direction of movement at
t
=
0.3
sec
.
1. Given the vector field F(x, y, z) = -zi, verify the relation
1
VF(0,0,0) lim
+0+ volume inside S
ff F• Nds
S.
where S, is the surface enclosing a cube centred at the origin and having edges of length 2€. Then,
determine if the origin is sink or source.
Let a = (-4, 5, 4) and 6 = (1,0, -1).
Find the angle between the vector
1) The exact angle is cos
2) The approximation in radians is
Elementary Statistics: Picturing the World (7th Edition)
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