Title: PHYS 2101
1PHYS 2101
Spring 2009
- Week One Revisited
- Newtons Laws
- Kinematics
- 1-dimensional
- 2-dimensional
- Graphical
2PHYS 2101
Fall 2008
A block of mass m1 rests on a rough inclined
plane and is attached to a hanging mass of mass
m2 by a string which is draped over a
frictionless, massless pulley. If ?k0.1, ?15º,
and m12m2, what is the magnitude and direction
of the acceleration of the hanging mass?
EX1
3PHYS 2101
Spring 2009
EX2
If the ramp is 1.2 m long and m1 starts from rest
at the bottom of the ramp, how long does it take
m1 to reach the top of the ramp?
4PHYS 2101
Spring 2009
position (m)
time (s)
velocity (m/s)
time (s)
5PHYS 2101
Spring 2009
EX3
A small child of mass 31 kg swings back and forth
on a rope swing whose length is 3.8 m. At the
bottom of each swing (i.e., when the rope is
vertical), her speed is 4.2 m/s. What is the
magnitude of the tension in the rope at the
instant when she is at the bottom of each swing?