1. At the instant shown in the photo, the record is slowing to a halt. What is t

Question

1. At the instant shown in the photo, the record is slowing to a halt. What is the direction of the centripetal acceleration of the yellow dot?

2. Using illustration from problem 1 - At the instant shown in the photo, the record is slowing to a halt. What is the direction of the tangent acceleration of the yellow dot?

3. Using illustration from problem 1 - At the instant shown in the photo, the record is slowing to a halt. What is the direction of the total acceleration of the yellow dot?

4. Using illustration from problem 1 - At the instant shown in the photo, the record is slowing to a halt. What is the direction of the tangent velocity of the yellow dot?

5. Hooke's Law states that:

B. Displacement of the end of the spring is inversely proportional to the restoring force

6. What does k represent in the formula in Hooke's Law?

7. If a material has a spring constant of 10 N/m and is extended by 1 m, what force must have been applied to the object?

8. The elasticity of a material is characterized by the value of:

9. A spring is stretched past a certain point such that, when released it does not return to its original length. What is this point called?

Explanation / Answer

1. Centripetal acceleration is always towards the center. This is represented by option F.

2. Tangential acceleration is at 90 degree to centripetal acceleration. This is represented by option D

3. The total acceleration is represented by option C

4. Same direction as tangential acceleration

5. Displacement is proportional to restoring force.

6.k represents spring constant.

7.F = Kx = 10*1 = 10 N

8. Young's modulus

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