APC Problem #2
Mechanics Review
STOP and READ
Below is the solution to the review problem identified in the title of this Smore.
Scroll up SLOWLY.
Reveal ONLY what you need to progress with your solution to the problem.
Additional question will be asked that relate to the problem’s solution.
Read the entire problem before preceding with the solution.
Questions - Part A
What is the equation for the acceleration along a frictionless incline?
- Draw an FBD.
- Resolve into components parallel and perpendicular to the incline.
- Sum forces parallel to the incline.
Find the speed using:
- Dynamics and Kinematics
- Energy
Questions - Part B
Where did you set PE = 0?
Questions - Part C
What direction is the mass accelerating just before hitting the spring?
What direction is the mass accelerating when the spring is fully compressed?
Describe the motion of the mass while accelerating down the incline.
Describe the motion of the mass while accelerating up the incline.
Describe the motion of the mass the instant the acceleration changed from down the incline to up the incline.
- What's the acceleration at this instance?
- What's the net force at this instance?
- Draw an FBD at this instance.