This preview shows pages 1–6. Sign up to view the full content.

Remember: This Week Read Ch. 8: And read Dr. Dubson’s excellent notes on Ch. 8 ASAP. CAPA assignment #11 is due this Friday at 10 PM, to be done on -line. Face-Book CAPA Group: CAPA2010. Lab 5 this week: Rotational Dynamics. Do Pre-Lab, print & bring it and the Lab Manual to your Lab Session. Don’t Forget: 3 rd mid-term exam next Tuesday evening at 7:30 PM: CH. 6 Energy CH. 7 Momentum CH. 8 Rotational Motion. L31 W 3/31/10 1 Physics 2010

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
CH. 8: Extra QuesAons & Problems Questions: 5, 9, 13. Problems: Angular Quantities: 4, 8, 11 Constant Angular Acceleration: 16, 19 Torque: 23, 25, 26 Rotational Dynamics: 27, 29, 33, 35 Rotational KE: 45, 47 L26 F 3/13/09 2 Physics 2010
L31 W 3/31/10 Physics 2010 3 Rotational Kinematics Describing rotational motion = a tan r = v r = 2 π τ = 2 f IC angle of rotation (rads) angular velocity (rad/s) angular acceleration (rad/s 2 ) torque (N m) moment of inertia (kg m 2 ) Newton’s 2 nd Law Monday Δ KE + Δ PE = constant Δ KE trans + Δ KE rot + Δ PE = constant (Conservation of Mechanical Energy)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
L31 W 3/31/10 Physics 2010 4 Torque and Moment of Inertia r r θ s F F A Consider the work done by a constant force in moving an object from point A to point B. F W = = F s = F ( r θ ) = ( rF ) = τθ (Component of force along displacement) x displacement τ≡ rF
L31 W 3/31/10 Physics 2010 5 A mass is hanging from the end of a horizontal bar which pivots about an axis through its center. The bar is released and begins to rotate due to gravity.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.