Question
Sketch qualitative (no numbers) bar graphs for when the car is at the indicated points. How much Gravitational Potential Energy does the car have at
- Sketch qualitative (no numbers) bar graphs for when the car is at the indicated points.
- How much Gravitational Potential Energy does the car have at point A?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution(s) |
- How much Kinetic Energy does the car have at point C?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution(s) |
- How fast is the car moving at point C?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution(s) |
The spring in the picture above has a spring constant of k = 50 N/m. The box has a mass of 8.0 kg and is on a surface withno friction. Initially, the box is compressing the spring, and then the spring is uncoiled and the box is in motion.
- In the diagram, suppose the spring was compressed to 4.0 m. How much Spring Potential energy is stored?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution(s) |
- Suppose all the spring energy from #5 was transferred to the box when it was released. How fast would the box be moving?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution(s) |
A 700 kg semi-truck is moving at 20 m/s before it exits onto a runaway truck ramp on the highway. When it comes to a stop, it is at a height of 10 m higher than before.There is friction present.
- Complete the energy bar graphs above.
- How much Kinetic Energy does the truck have at the initial position? How much Gravitational Potential energy?
| Ek | Eg
|
21. How much Kinetic Energy does the truck have at the final position? How much Gravitational Potential energy?
| Ek | Eg
|
22. How much thermal energy was generated in the process?
A hockey player shoots a 0.3 kg puck with a net force of 200 N over a distance of 20 meters.
23. Draw an LOL diagram for the puck when:
- It's motionless on the ice
- It's sliding on africtionless surface with a constant velocity
24. How much work did the player do on the puck?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution |
25. What is the puck's velocity?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution |
26. How much power did the player use if it took her 0.5 seconds to shoot the puck?
| Given(s) | Unknown(s) | Equation(s) | Substitution(s) | Solution |
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Introductory Classical Mechanics
Authors: David Morin
1st edition
9780511808951, 521876222, 978-0521876223
