Lab 8: Rotational Inertia and Angular Acceleration

Question 1

Purpose of Lab 8

Answer 1

1) measure the angular velocity and angular acceleration
2) measure the rotational inertia
3) demonstrate that the moments of inertia are additive

Question 2

in an angular velocity versus time graph, what is the slope?

Answer 2

angular acceleration

Question 3

the property of a body which causes it to oppose any change in its state of rest or constant angular velocity is called its:

Answer 3

moment of inertia/rotational inertia

Question 4

What happens when a force whose line of action does not pass through the axis of rotation is applied on the disc?

Answer 4

a TORQUE is said to be acting upon the object

Question 5

torque is always _____ to the plane defined by r and force

Answer 5

torque is perpendicular to the plane of the radius and force

Question 6

application of a net torque on an object produces an _____ on the object

Answer 6

application of a net torque on an object produces an angular acceleration

Question 7

What law is demonstrated in this experiment?

Answer 7

a rotational form of NEWTONS SECOND LAW

Question 8

possible sources of error?

Answer 8

1) mass may have reached the end of the travel during this measurement period and the result will be inaccurate
2) true friction between the disk
3) inaccurate measurements of radius
4) the calculations of error of angular ACCELERATIONS, which may have thrown off the inertia calculations