Lab Technique
What would need to be measured to find an object's acceleration? Kinematics
Distance, time, initial speed of zero
Alt. Initial speed, final speed, time
What is uniform circular motion?
Any constant speed motion in a constant circular path.
What is Simple Harmonic Motion?
Simple Harmonic Motion is oscillating motion that is in a repeating cycle of motion where an object moves from equilibrium to A+ back to equilibrium, to A- and back to equilibrium again. There is a restoring force on the object which is always pulling the object toward equilibrium.
How can centimeters be converted into meters?
Divide by 100
What is the equation for a linear relationship on a graph?
y= mx + b
What would need to be measured to find the net force on an object?
Mass of object, distance covered, initial speed of zero and time it took to cover the distance or
Mass, initial speed, final speed, time
or
Mass and use an accelerometer.
What is the equation for centripetal acceleration and force?
a= V2/r and F=mV2/r
What is the spring constant?
The spring constant K, is the measure of how strong of weak the spring is. This is measured in N/m and is found using F=[kx ] (absolute value)
How can kilometers be converted into meters
Multiply by 1000
What must be graphed on the Y-axis and X-axis to find the slope to be acceleration if the Net force and mass of an object are known?
F=ma so m must be on the X and F must be on the Y axis so that a = slope
How could two cart collide and one tell if momentum was conserved in the collision?
Measure both masses, both velocities before the collision and velocities after the collision.
Velocities can be measured by
a) D/t or b) video or c) sonic ranger
What is the equation for the tangential speed of an object traveling in UCM?
V=2(Pi)r/T where T= period(s)
How does the amplitude of oscillation relate to the frequency of the SHM?
The amplitude is NOT related to the frequency of an object in SHM, the amplitude is directly related to the kinetic/potential energy the object has.
How can Km/hr be converted into m/s?
Divide by 3.6
What must be graph of X and Y axis so that the velocity is the slope if momentum and mass are known?
P= mv so P is on the Y and m must be on the X axis if v is to be the slope
Describe how one could find if angular momentum was conserved using the whrilygigs and a falling mass.
Need to know the revs, the time, mass and the radius of the whirlygig's shaft.
What provides the centripetal force for a car when it travels through a corner?
Friction between the car's tires and the road provide the centripetal force to keep the car traveling in a circular path of the corner.
What are amplitude, frequency, period and displacement of an object in SHM?
Amplitude- Maximum displacement from equilibrium
Frequency- Cycles/sec
Period- Sec/Cycle
Displacement- Distance from equiibrium
How can hours be converted into seconds?
Multiply by 3600
What must be graph so that velocity is the slope if the kinetic energy and mass of an object are known?
K=1/2mv2 so v=square root of K/2m so the square root of K must be on the Y and the square root of 2m must be on the X axis.
How could one determine if energy is conserved in an experiment where a car goes down a ramp, flies of the ramp and lands on the lab bench?
Height of ramp, mass of car, distance car traveled horizontally, the angle the car left the ramp with and the time the car was in the air.
What provides the centripetal force for an object hanging on a string and rotating in circular path?
The component of the tension in the string provides the centripetal force that keeps the object rotating in a circle.
What is the kinetic energy of a SHM system? Potential E of SHM system?
K= 1/2kx2
U= Energy total-Kinetic
How can kg be converted into Newtons(N)?
Multiply by m/s2
What must be graphed so that the moment of inertia is the slope of the graph if the Net torque and angular acceleration of an object are known?
Since Tnet= I x (alpha), thenI= Tnet/(alpha)
so Tnet must be on the Y and (alpha) must on the Y axis.