## ← Back to Combo with "Conceptual Physics--Chapter 8: Rotational Motion" and 3 others

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of 77 available terms
(30 exact duplicates found)

### 5 Matching Questions

1. Centripetal Acceleration
2. rotational speed
3. centrifugal force
4. Efficiency
5. Formula for Centripetal Acceleration
1. a Apparent outward force on a rotating or revolving body.
2. b Newton's First Law states that a body in motion stays in motion at a constant speed and in a straight line unless acted upon by a net force; therefore, a force must be pulling inward on an object moving in a circular path in order to prevent it from moving in a straight path.
3. c Number of rotations or revolutions per unit of time.
4. d In a machine, the ratio of useful energy output to total energy input, or the percentage of work input that is converted to work output.
5. e a = v^2/r = 4rπ^2/T
where v = velocity, r = radius, T = period

### 5 Multiple Choice Questions

1. Work done on an object is equal to the kinetic energy gained by the object. work = change in energy or W = change(KE)
2. It is common to express totational rates in revolutions per minute (RPM).
3. I = mr²
4. This force is not an actual force; it is a fictitious force that seems to pull outwards on an object on a circular path. This effect is due to inertia, or the tendency for a moving object to follow a straight path.
5. The product of force and lever-arm distance, which tends to produce rotation.
Torque = lever arm × force

### 5 True/False Questions

1. axis (pl. axes)I = ½ mr²

2. Formula for Torquemotion with constant radius of curvature caused by acceleration being perpendicular to velocity

3. *revolution*Spinning motion that occurs when an object rotates about an axis located within the object (usually an axis through its center of mass).

4. Hoop about diameter:I = 1/3 mL²

5. potential energyEnergy of position, usually related to the relative position of 2 things, such as a stone and the earth, or an electron and a nucleus.

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