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Equations of Motion: General Plane Motion

Select the answer for each of the following questions, then press "Mark" at the bottom of the page to receive feedback.
A pen and paper may be required to assist in the answering of some questions.
Questions beginning with "cont...." follow on from the previous question.

1) The rod has a mass of 100kg and is originally at rest. Determine the acceleration of its mass centre at the instant shown.

aG = ?

One answer only.

   1 m/s2
   2 m/s2
   3 m/s2
   4 m/s2



2) cont....What is the bar's angular acceleration?

a = ?

One answer only.

   1.5 rad/s2
   3 rad/s2
   6 rad/s2
   9 rad/s2


3) The disk has a mass of 100kg. If it rolls without slipping, determine its angular acceleration. For the solution sum moments about the ground point A and use kinematics.

a = ?

One answer only.

   0 rad/s
   2 rad/s
   3 rad/s
   6 rad/s



4) cont.... If the surface at A is smooth, what is the acceleration at point G on the disk?

aG = ?

One answer only.

   0 m/s2
   1.5 m/s2
   3 m/s2
   6 m/s2


5) contd.... What is the angular acceleration?

d = ?

One answer only.

   0 rad/s2
   2 rad/s2
   3 rad/s2
   6 rad/s2


6) The 100kg disk is subjected to a couple moment of 100Nm. If the coefficient of kinetic friction at A is mA = 0.1, determine the acceleration of its mass centre. The disk slips as it rolls.

aG = ?

One answer only.

   0.981 m/s2
   1.962 m/s2
   2 m/s2
   9.81 m/s2



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