Balloons as a
Linear (Volume of Balloons as a
Volume of Balloons as a Function of Their Radi
IB Physics I
Lab Write Up
Aim: The aim of this experiment is to use height and time measurements to determine the
acceleration of free fall, g.
1 golf ball
1 stop watch
x(t) = 1/2at 2 , where a is a constant.
At t = 0 , this object is situated at the origin, but its position
changes quadratically with time (since the exponent of t in the
above equation is 2 ).
For positive a , the graph of this position function looks li
x(t) = cos wt , where w is a constant.
An object with this position function is undergoing simple
harmonic motion, which means its position is oscillating back and
forth in a special fashion.
Since the range of the cosine function is (- 1, 1) , the object
Work is commonly misunderstood because of its common definition.
Most people think that it takes a lot of work to hold a 100 pound weight in
The weight is not moving, though, so in the sense of physics no work is
It is important to realize
Work Done by a Variable Force
Consider a force acting on an object over a certain distance that varies
according to the displacement of the object.
Let call this force F(x) , as it is a function of x .
Though this force is variable, we can break the inter
With Newton's second law, we can take a given physical situation and find
the acceleration, and thus the motion, of an object in the situation.
In addition, using the method of free-body diagrams, we can evaluate any
number of distinct forces.
Such an abi
With a knowledge of physical forces such as tension, gravity and friction,
centripetal force becomes merely an extension of Newton's Laws.
It is special, however, because it is uniquely defined by the velocity and
radius of the uniform circular motion.
While vectors in finite-dimensional Euclidean space are perfectly valid in our case it is
not a good idea to become too attached to the notions of "direction" and "magnitude" for
For instance, in quantum mechanics vectors often come in the form o
When comparing static with kinetic friction, it must be noted that s is
always greater in value than k .
Simply stated, this means that it takes less force to keep a block moving than
to start its motion.
what is the dot product between two different vectors?
The important thing to remember is that whatever we define the general rule to be, it
must reduce to whenever we plug in two identical vectors.
In fact, Equation has already been written suggestively
What happens when a car which is traveling along at constant velocity
screeches to a halt?
The velocity of the car decreases rapidly, corresponding to a large negative
acceleration (or deceleration) of the vehicle (courtesy of good brakes).
While the car