Physics, 10.10.2019 13:30 nae878

When an object oscillating in simple harmonic motion is at its maximum displacement from the equilibrium position, which of the following is true of the values of its speed and the magnitude of the restoring force?
speed: magnitude of restoring force:

a .zero zero
b.1/2 maximum 1/2 maximum
c. maximum zero
d. maximum 1/2 maximum
e. zero maximum

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Answer from: 19jcormier

The option that is true of the value of its speed and the magnitude of the restoring force is zero maximum.

It should be noted that at the point of maximum displacement, the speed will be zero while the restoring maximum force is at maximum.

When an object oscillating in simple harmonic motion is at its maximum displacement from the equilibrium position, then there will be zero maximum due to the changing direction of motion.

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Answer from: sere50

E. Zero Maximum

Explanation:

At the point of maximum displacement, the speed is zero while the restoring force is maximum. In fact:

- The restoring force is given by F=kx , where k is the spring constant and x is the displacement - at the point of maximum displacement, x is maximum, so F is maximum as well

- the total energy of the system is sum of kinetic energy and elastic potential energy:

$E=K+U=\frac{1}{2}mv^2+\frac{1}{2}kx^2$

where m is the mass of the system and v is the speed. Since E (the total energy) is constant due to the law of conservation of energy, we have that when K increases, U decreases, and viceversa. As a result, when x increases, v decreases, and viceversa. At the point of maximum displacement, x is maximum, so v will have its minimum value (which is zero, since the system is changing direction of motion).

Answer from: Quest

v=ir = 3x15 =45 v

Answer from: Quest

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this. hope that you like the video and that it explains more in detail to you.

that is the link.

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