Ch 05: Friction, Inclines, SystemsWorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Example #1: Kinetic Friction Problems

Practice: A 15 kg block moving on a frictionless horizontal surface with a constant 40 m/s enters a long, rough patch. If the coefficient of friction between the box and the patch is 0.7, calculate the block’s total stopping distance.

Practice: A 1,000-kg car leaves a skid mark of 80 m while coming to a stop. If the coefficient of friction between the car and the road is 0.7, find the car’s initial velocity before braking.

Example #2: Kinetic Friction Problems

Example #3: 2D Push / Pull with Friction

Practice: A 5 kg block is initially at rest on a flat surface. The block-surface coefficients of friction are 0.4 and 0.5. If you push on the block with F = 130 N directed at –53°, calculate its acceleration (select a = 0 if the block does NOT move).

Example #4: 2D Push / Pull with Friction