1. What do we want to do today?! Saturday: 19-1-1440
A bit of housekeeping
Conclude Chapter-5
Prof. Zain Yamani
Office: / 3102; Phone: ; Mobile:
HP:

2. This coming Tuesday, at 6.00 p.m. Building-6, Room-125
A bit of housekeeping
Help session
This coming Tuesday, at 6.00 p.m.
Building-6, Room-125
Problems from chapters 1-5, in sha’a Allah.
(also) Conceptual questions, for review.
Please try to (all) come..
I welcome students from other sections  but I do not intend publicize [you can invite if you want]

3. A bit of housekeeping
Attendance
If you come late, please make me aware during the (end of) the same lecture.

4. A bit of housekeeping
Laws or not a law?
Two types of truths! 

5. A bit of housekeeping
What is the acceleration of an object sliding down a smooth incline? What is the normal force?

6. Chapter-5: Newton’s Laws of Motion
Some particular forces
Applying Newton's laws

7. What are the fundamental types of forces in the Universe?
Which is the one that is predominant in nature and in technology?

8. What does “inertial reference frame” mean?
Is earth (i.e. the ground) an inertial frame or rather an non-inertial frame of reference?

9. Same forces, different masses
Same masses, different forces
Different forces, different masses

10. Can a single force be balanced?
When the net or resultant force is zero, we say the forces are balanced.
Can a single force be balanced?
How about two forces?
How about three or more forces?

11. The “free body diagram”

12. Consider an Atwood Machine where a stretch-less mass-less rope connects to masses (m2 > m1) and hangs over a mass-less frictionless pulley.
Draw a schematic diagram of the system.
Draw the free body diagram for m1.
Derive the acceleration of m1.
Taut, massless, unstretchable (or stretch-less) string

13. Some particular forces
Gravitational force
What do we mean by normal force?
What do we mean by tension?
What about the force of friction?
(static/ kinetic)

14. Applying Newton's laws

15. Applying Newton's laws