Physics 1114 lab final

the frictional force that holds an object in place is called ______ friction

static

the coefficient of static friction is always ______ the coefficient of kinetic friction

greater than

if the pendulum is moved from the earth where g is 9/8 m/s^2 to jupiter where it is 26.0 m/s^2 the period of the pendulum will

decrease

Given the kinematics equation for the motion of an object falling from rest, x=.5g*t2), what kind of relationship is predicted between x and t?

displacement, x, is proportional to the square of the time, t62 x=k*t^2 where k is constant displacement,x, and time, t, obey a power law

the coefficient of friction can be zero, meaning there is no friction between the two surfaces

false

if the angle of the pendulum, increased from 2 degrees to 4 degrees the period will

remain the same

if the mass of the pendulum, m, is decreased the period will

remain the same

what are the units for the period of a pendulum from the equation above

s

if you plotted x vs t^2 for an object falling from rest (Assuming down to be positive) what should the graph look like

straight line positive slope y intercept is zero

describe the graph that you would obtain if you plotted acceleration vs the mass ratio a= (ma/(m1+m2+ma+mf) g

straight line through the origin

considering our pull system with a mass falling at a constant acceleration, what should the general snap of its position vs time graph look like

a curve with an increasing slope

considering our pulley system with a mass falling at a constant acceleration, what should the general shape of its velocity vs time graph look like

a straight line

a specific pendulum has a period of T, if the length of the string, L is increased the period will

increase

if the force applied on a object is greater than the force of kinetic friction the object will travel with ________ velocity

increasing

the frictional force that slows an object down while in motion is called ________ friction

kinetic

given the equation, the slope of the graph of acceleration vs the mass ratio is a=(ma/(m1+m2+ma+mf) g

the acceleration due to gravity

if you drop a feather and penny in air, which one would hit the ground first

the penny will hit first

if you drop a feather and penny in a vacuum (no resistance) which one would hit the ground first

they will hit at the same time

what is the purpose of the friction rider

to counter balance the kineticc friction in the system

according to kinematics (x=.5gt^2) the acceleration is dependent only upon

where the object is located