1. Do Now Heading: Friction Force Continued
Pick up a practice problem set from the front table
Turn in any missing work
Reminder, Unit Test Next Tuesday ( 10/27)
There are extra study resources on the class website!

2. Review Practice Problems
M = 4 kg
1) Solve for the
F net
Acceleration of the block
2) A 5 kg block is sitting at rest on a table.
a) Draw a FBD for the block ( make sure to include all of the forces acting on the block)
b) What is the weight of the block?
c) What is the normal force that this block is experiencing?

3. CENTRIPETAL ACCELERATION

4. Identify the centripetal acceleration and the direction the ball would fly if the string broke.

5. Friction Force

6. Drawing FBDs with Friction
A man pulls a block up a slope to the left
A man pushes a box to the right
MAKE SURE TO INCLUDE ALL FORCES THAT ARE ACTING ON THE OBJECT. USE YOUR FORCES BOOK FOR HELP!

7. Force of Friction Problem
A man pulls a 4 kg box to the right with a force of 10 N.
The box does not move.
Draw the FBD of for the box. ( Make sure to include all of the forces acting on the box)
Is the system balanced or unbalanced?
What is the force of friction for the box?