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# JEOPARDY! - PowerPoint PPT Presentation

JEOPARDY!. Click Once to Begin. Unit 5 Exam – Physics Circular & Harmonic Motion. JEOPARDY!. Definitions. Labs. Demos/ Activities. Circular Motion. Harmonic Motion. Empty. 100. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 300. 400.

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### JEOPARDY!

Click Once to Begin

Unit 5 Exam – Physics

Circular & Harmonic Motion

Definitions

Labs

Demos/ Activities

Circular Motion

Harmonic Motion

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### Squared Period vs. Length calculate the acceleration due to gravity?

In the Simple Harmonic Motion – Springs Lab, we discovered that the period of a spring in simple harmonic motion depends only on what two things?

### During the airplane lab you measured the length of the string and the radius of the circle. Why did you need both of these distances?

You needed the length of the spring and the radius in order to calculate the angle that the string was making with the vertical. This angle was then used to help calculate the centripetal force.

In order to transfer the marble from the Styrofoam cup into the paper cup, you had to spin the marble in a relatively fast circle around the inside of the Styrofoam cup. This circular motion created a force on the marble that pointed in which direction?

### Toward the center of the cup the paper cup, you had to spin the marble in a relatively fast circle around the inside of the Styrofoam cup. This circular motion created a force on the marble that pointed in which direction?

When we swung a water cup on a platform in a circle over our heads, the cup didn’t fall off the platform and the water didn’t spill, even though the centripetal force points toward the center. Why?

### Gravity (or weight of the glass) be greater than the force of _____ in order for the glass to survive.

The ball and cup toy uses centripetal acceleration to cause the ball to travel in a circular path. What force causes the centripetal acceleration?

### Velocity (the direction of the velocity vector is always changing)

Daily Double!!! changing)

Use the circle provided to draw in the velocity vector and the acceleration vector for an object traveling in a clockwise circle. What is the angle between these vectors?

a changing)c

v

90 degrees

“Centrifugal Force” is really a fictitious force. People feel a sensation of being pressed outward when traveling in a circle because of which physics principle?

Inertia. For example, on a circular fair ride the person wants to travel in a straight line (due to inertia) but the ride keeps turning and getting in the way.

### How do you measure the period of a pendulum or an oscillating spring?

In order to measure one full cycle, you must time from one amplitude maximum to the next. For example, the left-most position of the pendulum back to the left-most position of the pendulum. Or the top of the oscillating spring back to the top of the oscillating spring.