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12.57 Nonconservative Work and Energy Loss Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.57 Nonconservative Work and Energy Loss. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Nonconservative Work and Energy Loss: Identify how friction, drag, or applied forces change mechanical energy and increase thermal energy. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.57 - Nonconservative Work and Energy Loss: NGSS HS-PS3-1, HS-PS3-2, HS-PS3-3, HS-PS3-5; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSS-ID; AP Physics 1 Unit 3; AP Physics C: Mechanics energy enrichment; TX TEKS Physics §112.45(c) energy; FL SC.912.P.10.1, SC.912.P.10.2; VA PH.4; MA/CA/NY HS-PS3.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Physics

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 12.57 Nonconservative Work and Energy Loss skill assessments:

Problem 1Difficulty: Mastery

Use the mechanical-energy graph. What average resistive force magnitude is represented from x = 0 m to x = 12 m?

A60 N

B12 N

C17 N

D5 N

Solution & Explanation:Mechanical energy drops from 200 J to 140 J, a loss of 60 J over 12 m. The average resistive force magnitude is 60 J / 12 m = 5 N.

Problem 2Difficulty: Mastery

A box is lowered by a winch at constant speed. The box's gravitational potential energy decreases by 500 J, its kinetic energy is unchanged, the winch absorbs 450 J, and 50 J becomes thermal energy. What is the net nonconservative work on the box's mechanical energy?

A+500 J

B-450 J

C-500 J

D+50 J

Solution & Explanation:For the box's mechanical energy, Delta K = 0 and Delta U = -500 J. Thus W_nc = Delta E_mech = -500 J; the removed energy goes to the winch and thermal energy.

Problem 3Difficulty: Mastery

A damped oscillator experiences a viscous force F = -bv. What is true about the work done by this force over one full oscillation?

AIt is positive because the oscillator returns to its starting position.

BIt is negative because the damping force opposes the velocity throughout the motion.

CIt is zero because every oscillation is a closed path.

DIt is conservative because it depends on displacement only.

Solution & Explanation:For viscous damping, force is opposite velocity, so power F dot v is negative whenever the object is moving. Mechanical energy decreases over the oscillation.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Physics Science students. It aligns with educational standard 12.57 (NGSS HS-PS3-1, HS-PS3-2, HS-PS3-3, HS-PS3-5; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSS-ID; AP Physics 1 Unit 3; AP Physics C: Mechanics energy enrichment; TX TEKS Physics §112.45(c) energy; FL SC.912.P.10.1, SC.912.P.10.2; VA PH.4; MA/CA/NY HS-PS3.).