Definitions
The number of rotations or revolutions per unit of time.
What is rotational speed?
The average position of the weight distribution.
What is center of gravity?
Tangential speed ~
What is r*w?
The center of mass of a baseball follows this trajectory.
What is parabolic?
The property of a system that enables it to do work.
What is energy?
The linear speed of something moving along a circular path.
What is tangential speed?
What is tangential speed?
Torque=
What is lever arm * force?
No rotation is produce when these balance each other.
What are torques?
The change of kinetic energy.
What is work?
The property of an object to resist changes in its rotational state of motion.
What is rotational speed?
What is 0?
This type of object has its center of mass at its geometrical center.
What is symmetrical?
A collision in which objects rebound without lasting deformation or the generation of heat.
What is elastic collision?
The product of a lever arm and a force that tends to produce rotation.
The shortest distance between the applied force and the rotational axis.
If the level arm is 3m and the force is 70 N, what is the torque?
When a wrench is slid across a table, its center of mass follows this path.
What is straight-line?
In a vacuum, a coin and a feather fall at the same rate, side by side. Would it be correct to say that equal forces of gravity act on both of them when in the vacuum?
What is no?
On a body or on a system, this must be zero for mechanical equilibrium.
What is net torque?
The average position of the weight distribution, with or without gravity.
Rotational speed ~
What is tangential speed/radial distance?
When an object if large enough so that gravity varies from one part to another, these two terms cannot be used interchangeably.
What is center of mass and center of gravity?
As the rocket gets farther from Earth, the gravitational pull of each on the other ______.
What is decreases?