Download sgt2

PHYS 211
MWF 9-9:50 & 11-11:50
Study Guide for Test #2
Chapters 5,6,7, & 8
Format will be similar to Test #1, consists of regular questions and problems.
A. You should know the following:
1.
2.
3.
4.
5.
6.
7.
Newton’s three laws of motion.
Drawing Free-body diagrams.
Solving problems with frictional forces.
Solving circular motion problems.
Work-Energy theorem.
Solving problems using conservation of energy principles.
Hooke’s law.
B. You should be able to define the following: weight, work, power, kinetic energy,
potential energy, mechanical energy, conservative, and non-conservative forces.
C. The following equations will be provided if needed:
1. Equations of kinematics
1.
2.
1
x  x0  (v  v0 )t
v  v0  at
2
3.
4.
v 2  v0  2a( x  x0 )
2
2b. Frictional forces:
1
CAv 2
2
1
5. Kinetic energy: K  mv 2
2
4. Centripetal force: F 
7. Elastic Potential Energy = U ( x) 
1 2
kx
2
3. Drag force: D 
8. ∆𝑈 = −𝑊
11. Work done by a variable force:
W
t
Pins 
1 2
at
2
dW
dt
Pins  F  v
x  x0  vt 
f S ,max   S FN
mv 2
R
6. Gravitational Potential energy = U ( y )  mgy
10. Work done by a constant force: W  FdCos  F  d
12. Power: Pavg 
x  x0  v0 t 
f k   k FN
2a. Newton’s 2nd Law: 𝐹𝑛𝑒𝑡 = 𝑚𝑎
5.
𝑑𝑈
9. 𝐹(𝑟) = − 𝑑𝑟
1 2
at
2