Torque AR example

Topics to address are:

• cross product
• Torque equation - identifying R, identifying F  
• right hand rule
• rotation direction convention
• moment of inertia
• angular acceleration (and angular velocity)

Khan Academy

• Torque
• Cross Product
• Moment of Inertia

Examples  to animate

• wrench-90deg
• see saw-90deg
• wheelbarrow-30deg

app quiz questions(long and short)

solve this problem

y = 5 + ( 2 + 3)

ln1 5 + 5

ln2  10

ln3 

• wrench example(short answer)
• what direction is it going
• net torque
• see saw example(short answer)(advise making free body diagram)
• find r
• wheelbarrow (long answer)
• r x f find angle(break up question)
• a what is r
• b find the net force applied in the question
• c find net torque
• question about Rotational acceleration
• bicycle
• question about moment of inertia
• planets