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## PowerPoint Slideshow about ' JEOPARDY!' - hye

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### Any object moving in a circular path has an acceleration pointing toward the center of the circle.

### The amount of time it takes for an object to travel one revolution or cycle.

### What is the equation for the Law of Universal Gravitation and who derived it?

### During uniform circular motion, what two things need to remain constant?

### A sensation someone experiences when they are in free-fall—when there are no contact forces acting upon them.

### For the Pendulum Lab, what did we graph in order to calculate the acceleration due to gravity?

### In the Hooke’s Law Lab, we graphed Spring Force vs. Displacement. What was the slope of the line?

### 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?

### Inertia wants the cup to fly off in a direction tangent to the circular path, but the platform keeps getting in the way.

### The spinning CDs worked based primarily on two physics principles. Which two principles?

### When we dropped the wine glass, the centripetal force had to be greater than the force of _____ in order for the glass to survive.

### An object moving in circular motion travels a distance of ______ in one period.

### There is always a centripetal acceleration during uniform circular motion because the _______ is always changing.

### Where on the Earth would a person experience the least circular velocity?

### The position that the spring naturally returns to when there are forces acting on it.

### A measure of the elasticity of a spring; how difficult it is to stretch or compress a spring.

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

Definitions

Labs

Demos/ Activities

Circular Motion

Harmonic Motion

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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?

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?

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?

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

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?

“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.

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.

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