Atwood machine
Authored by Anwar Barqawi
Physics
9th Grade
NGSS covered
Used 294+ times
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About
This quiz focuses on Atwood machines, a fundamental topic in classical mechanics that explores the motion of two masses connected by a string over a pulley. Appropriate for grades 9-10, this assessment requires students to apply Newton's second law and understand the principles of connected systems in physics. Students must demonstrate mastery of several interconnected concepts: calculating net force by finding the difference between gravitational forces acting on each mass, recognizing that connected objects share the same acceleration magnitude, predicting the direction of motion based on mass differences, and solving for system acceleration using F=ma with the total mass of the system. The problems demand both conceptual understanding of how forces interact in pulley systems and computational skills to work with algebraic expressions involving mass, acceleration, and force relationships. Created by Anwar Barqawi, a Physics teacher in the United Arab Emirates who teaches grade 9. This quiz serves as an excellent tool for formative assessment during a unit on Newton's laws and mechanical systems, allowing teachers to quickly gauge student comprehension of force analysis and connected motion problems. The questions work particularly well as a warm-up activity to activate prior knowledge before more complex pulley problems, or as homework practice to reinforce classroom instruction on system dynamics. Teachers can also use this assessment during review sessions before summative tests, as the varied question types help identify specific misconceptions about force direction, acceleration relationships, and mathematical problem-solving approaches. This quiz directly supports NGSS standards HS-PS2-1 (analyzing data to support Newton's second law) and aligns with Common Core mathematical practices in modeling real-world physics scenarios through algebraic reasoning.
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How much is Fnet on the system?
40 N
50 N
10 N
4 N
Tags
NGSS.HS-PS2-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For the system of attached masses m1 & m2, which mass will have a higher acceleration?
m1
m2
Both will have same acceleration because they're attached by a string
Tags
NGSS.HS-PS2-1
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In the figure below, on which side of the pulley will the string accelerate downward?
right side
left side
will not accelerate
Tags
NGSS.HS-PS2-1
NGSS.HS-PS2-4
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the acceleration of the system.
30/4 m/s2
10/4 m/s2
5 m/s2
20 m/s2
Tags
NGSS.HS-PS2-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How much is Fnet on the system?
50 N
30 N
5 N
3 N
Tags
NGSS.HS-PS2-1
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