A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E= 46.9 J and a maximum displacement from equilibrium of 0.201 m. (a) What is the spring constant? 1163.2 X N/m (b) What is the kinetic energy of the system at the equilibrium point? 0 X The correct answer is not zero. J (c) If the maximum speed of the block is 3.45 m/s, what is its mass? 420 x Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. kg. (d) What is the speed of the block when its displacement is 0.160 m? 3.04 x Your response differs from the correct answer by more than 10%. Double check your calculations. m/s.

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Chapter1: Units, Trigonometry. And Vectors
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A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 46.9 J and a maximum displacement from equilibrium of 0.201 m.
(a) What is the spring constant?
1163.2
X N/m
(b) What is the kinetic energy of the system at the equilibrium point?
0
X
The correct answer is not zero. J
(c) If the maximum speed of the block is 3.45 m/s, what is its mass?
420
X
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. kg.
(d) What is the speed of the block when its displacement is 0.160 m?
3.04
X
Your response differs from the correct answer by more than 10%. Double check your calculations. m/s.
(e) Find the kinetic energy of the block at x = 0.160 m.
1.95
X
Your response differs from the correct answer by more than 10%. Double check your calculations. J
(f) Find the potential energy stored in the spring when x = 0.160 m.
14.86
X
Your response differs from the correct answer by more than 10%. Double check your calculations. J
(g) Suppose the same system is released from rest at x = 0.201 m on a rough surface so that it loses 16.4 J by the time it reaches its first turning point (after passing equilibrium at x = 0).
What is its position at that instant?
0.307
X
The response you submitted has the wrong sign. m
Transcribed Image Text:A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 46.9 J and a maximum displacement from equilibrium of 0.201 m. (a) What is the spring constant? 1163.2 X N/m (b) What is the kinetic energy of the system at the equilibrium point? 0 X The correct answer is not zero. J (c) If the maximum speed of the block is 3.45 m/s, what is its mass? 420 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. kg. (d) What is the speed of the block when its displacement is 0.160 m? 3.04 X Your response differs from the correct answer by more than 10%. Double check your calculations. m/s. (e) Find the kinetic energy of the block at x = 0.160 m. 1.95 X Your response differs from the correct answer by more than 10%. Double check your calculations. J (f) Find the potential energy stored in the spring when x = 0.160 m. 14.86 X Your response differs from the correct answer by more than 10%. Double check your calculations. J (g) Suppose the same system is released from rest at x = 0.201 m on a rough surface so that it loses 16.4 J by the time it reaches its first turning point (after passing equilibrium at x = 0). What is its position at that instant? 0.307 X The response you submitted has the wrong sign. m
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