Physics Unit 10 Fill In The Blank Pt 2

If C is the axis of rotation, which forces produce no torque?

• 1 and 3

• 3

• 4

• 5

• none

The point that a rotating body spins about is called the ____________

The point where all mass of a body may be considered to be concentrated is its ____________

List three characteristics of the center of gravity

• Not always within the object

• Always tries to reach the lowest possible position

• Natural axis of rotation

• Always within the object

• Always tries to reach the highest possible position

The stability of an object can be increased by ​ (a)   the COG or by ​ (b)   its base

• lowering
• widening
• increasing
• narrowing

When the mass is concentrated far from the axis of rotation, the body has _____ rotational mass

The angular acceleration will increase if the torque applied to a rotating body ​ (a)   or if the rotational mass of the body ​ (b)  

• increases
• decreases

When a skater increases her rotational mass, her angular speed _________ to conserve angular momentum

A body rotating about an axis is called a _________

___________ occurs when a force tries to change the direction of the axis of rotation of the gyroscope