- #1
Rock00
- 12
- 0
Question is:
------------
Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring loaded gun that is mounted on a table. The target box is 2.20 m horizontallyl from the edge of the table. Bobby compresses the spring 1.10 cm, but the marble falls 27.0 cm short. How far shuld Rhoda compress the spring to score a hit?
Answer:
--------
Diagram:
_______ projectile |
_|_spring_|-------------___ v
| | marble<--- ---O_
| | --__
| | --__
| |__________________________|box|_
|<------------2.20 m ---------->|
Given
-----
dx = 2.20 m
Sc (spring compressed) = .011 m
(falls .27 m short)
Sc=?
(hits the targe)
so basically what should be the compression of the spring before it can hit the target?
-----------------
I didn't know how to start. I wrote down F=-ks. I figured that the initial velocity is 0. PE at start is 0. Total change in energy is 0. But I do not know what else to do. Please help!
------------
Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring loaded gun that is mounted on a table. The target box is 2.20 m horizontallyl from the edge of the table. Bobby compresses the spring 1.10 cm, but the marble falls 27.0 cm short. How far shuld Rhoda compress the spring to score a hit?
Answer:
--------
Diagram:
_______ projectile |
_|_spring_|-------------___ v
| | marble<--- ---O_
| | --__
| | --__
| |__________________________|box|_
|<------------2.20 m ---------->|
Given
-----
dx = 2.20 m
Sc (spring compressed) = .011 m
(falls .27 m short)
Sc=?
(hits the targe)
so basically what should be the compression of the spring before it can hit the target?
-----------------
I didn't know how to start. I wrote down F=-ks. I figured that the initial velocity is 0. PE at start is 0. Total change in energy is 0. But I do not know what else to do. Please help!