Mechanics Forum

Post thread
Undergrad Is the Earth-Sun system an oscillator? What is an oscillator?
  • · Replies 11 ·
Replies
11
Views
2K
High School Newton's Third Law Question -- Does the Earth Do Work on Me?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Metal Ball Rolling in a Parabolic Bowl in the presence of a magnet
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Vibration in jack: up and down movement
  • · Replies 6 ·
Replies
6
Views
2K
High School Is it possible to calculate how much force is exerted on the ground and shoe midsole by your body while you run?
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Change of coordinates in a potential energy field
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Work done by action reaction forces when they move things
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Relationship between frequency and power for sound?
  • · Replies 11 ·
Replies
11
Views
6K
High School Help me understand jerk of a falling object hitting an "ideal foam"
  • · Replies 7 ·
Replies
7
Views
2K
High School Gravitatonal field force arrow diagram for Sun and Earth
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Gravitational field in Galilean relativity
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Effects of External Torques on the Angular Momentum of Asymmetric Bodies
  • · Replies 3 ·
Replies
3
Views
2K
High School Stopping power of rifle slugs
  • · Replies 30 ·
2
Replies
30
Views
2K
Graduate Euler Lagrange Equations for simple multi-body systems
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Tong Dynamics: cannot cancel angle from orbit energy expression calculation
  • · Replies 2 ·
Replies
2
Views
1K
High School Move in Space without mass exchange
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad How can we prove the kinetic energy equation
  • · Replies 2 ·
Replies
2
Views
1K
High School Does the shape of an object affect the pressure?
  • · Replies 16 ·
Replies
16
Views
1K
Undergrad Confusion about adding angular velocities
  • · Replies 4 ·
Replies
4
Views
2K
High School How to Fulcrum weigh camper trailer on bathroom scales?
  • · Replies 5 ·
Replies
5
Views
1K
High School Compressive force of a shorter cylindrical bone vs a longer one
  • · Replies 64 ·
3
Replies
64
Views
4K
High School Trying to understand hydrostatic pressure
  • · Replies 20 ·
Replies
20
Views
1K
High School Trying to understand hydrostatic pressure with different vessel widths
  • · Replies 3 ·
Replies
3
Views
1K
Insights How to Solve a Multi-Atwood Machine Assembly
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Not a physics major -- Question about how far we can kick an object
  • · Replies 22 ·
Replies
22
Views
2K
Undergrad How will the final output here behave?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Interferometric autocorrelation of sech^2 pulse?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Does a rotating accelerometer moving linearly measure linear velocity?
  • · Replies 47 ·
2
Replies
47
Views
4K
Undergrad Statics: When the reactions depend on the displacements
  • · Replies 35 ·
2
Replies
35
Views
5K
High School Vacuum surface area balance and force
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Electric guitar sustain calculation
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad How Could Rarefied Space Matter Affect a Starship's Speed Near a Star?
  • · Replies 9 ·
Replies
9
Views
1K
High School Fully submerged block in a pool of water
  • · Replies 3 ·
Replies
3
Views
2K
High School I have a doubt about the pressures at the same level of fluids
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad Earth's angular velocity when axis is aligned with apparent gravity
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Determine if the block will slide or flip over after contact
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad The proportion of kinetic energy of a rotating rigid body?
  • · Replies 7 ·
Replies
7
Views
2K
High School What is the Absolute Value of the Normal force on a block on this wedge?
  • · Replies 3 ·
Replies
3
Views
2K
High School Torsion Involving an Off Axis Thrust
  • · Replies 66 ·
3
Replies
66
Views
6K
Undergrad How to calculate the "weight" of this piece of metal?
  • · Replies 12 ·
Replies
12
Views
1K
Undergrad Determining whether an object will topple or move without a Slope Test
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad G Force Calculation Optimisation with camera, equations & accelerometer (drop testing)
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad How can angular displacement be larger than 2pi?
  • · Replies 20 ·
Replies
20
Views
2K
Undergrad Why does a free rigid body rotate only about its COM when F(ext) is applied?
  • · Replies 7 ·
Replies
7
Views
2K
High School What is physical significance of the direction of angular velocity?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad I'm calculating more energy out than I put in
  • · Replies 138 ·
5
Replies
138
Views
8K
Graduate Boundary condition of limiting friction in continuum mechanics
  • · Replies 18 ·
Replies
18
Views
2K
Undergrad Why does the main muscle use the most energy in body movements?
  • · Replies 24 ·
Replies
24
Views
2K
Undergrad Why must partialS/partialα_n = -β_n where S is the complete integral?
  • · Replies 3 ·
Replies
3
Views
1K
High School The inverse-square law: Gravitational force on two falling marbles
  • · Replies 23 ·
Replies
23
Views
2K
Graduate What Is the Expression for Settling Velocity in a Rotating Field?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Rotating plate thrown parallel to ground
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Does the classical theory of angular momentum explain this video of a unicycle robot?
  • · Replies 4 ·
Replies
4
Views
2K
High School Rolling Without Slipping on an Inclined Plane
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Units of a vector in a velocity vs time graph?
  • · Replies 13 ·
Replies
13
Views
2K
High School Filming a passing road sign: speed vs bumpiness
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Will This Friction Clamp Hold the Weight?
  • · Replies 10 ·
Replies
10
Views
2K
High School Why in two block systems do both blocks tend to have the same velocity?
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad A rod that falls while rotating from the end of a table
  • · Replies 2 ·
Replies
2
Views
2K
High School Is there any physics topic explaining how objects break into parts?
  • · Replies 18 ·
Replies
18
Views
1K
High School Force required to stretch training resistance bands
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad How Does Changing Mass and Spring Force Affect Watch Oscillators?
  • · Replies 11 ·
Replies
11
Views
2K
High School Work Done By Conservative Forces
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Noethers theorem, transformations of the Lagrange density
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Can Couette Flow with Wavy Plates?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Different results for the Range of a projectile
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Question about friction in situation where interface slip occurs
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Sliding a cloth beneath a block causing tipping
  • · Replies 13 ·
Replies
13
Views
1K
Undergrad Return to the center of the Earth
  • · Replies 10 ·
Replies
10
Views
2K
High School Feynman's lectures: Newton’s Laws of Dynamics
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Mechanics of an inertial balance
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad A problem regarding power output in cycling
  • · Replies 7 ·
Replies
7
Views
1K
Undergrad Two-Mass Oscillator: Plotting Amplitudes Over Frequency in Hertz
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Lever arm comparison on a boat with toe-in motors
  • · Replies 1 ·
Replies
1
Views
1K
High School Curious about Work and Energy Consumption
  • · Replies 8 ·
Replies
8
Views
2K
High School Determine forces acting on double inclined plane
  • · Replies 13 ·
Replies
13
Views
2K
High School Why Is an Object's Weight Equal to the Force of Gravity It Experiences?
  • · Replies 51 ·
2
Replies
51
Views
5K
Undergrad Lower center of mass creates more stability so how do you explain moving the center of mass upwards increases stability?
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Instantaneous velocity - displacement and distance
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Does Pipe Angle Affect Hydrostatic Pressure?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad What year were Navier-Stokes equations introduced?
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Question about Momentum vs. Kinetic Energy vs. Deforming In Collisions
  • · Replies 2 ·
Replies
2
Views
2K
High School Curious about the work - energy theorem
  • · Replies 8 ·
Replies
8
Views
2K
High School Why Did My Tennis Serve Bounce Unusually Low?
  • · Replies 15 ·
Replies
15
Views
2K
Undergrad Is shear stress at the pipe wall the same for turbulent and laminar flows?
  • · Replies 31 ·
2
Replies
31
Views
3K
High School How to determine applied force when two objects collide? (basic physics engine)
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Shouldn't the pressure difference along a pipe be a negative number?
  • · Replies 8 ·
Replies
8
Views
1K
Undergrad How does friction in a pipe occur, with the "no slip condition" ?
  • · Replies 25 ·
Replies
25
Views
2K
Graduate Recover Hamilton equation from 2-form defined on phase space
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad A vehicle has two wheels rolling at different speeds. What forces act on the vehicle as it follows a curved trajectory ?
  • · Replies 11 ·
Replies
11
Views
1K
High School Lewis C. Epstein's "Battleship Floating in a Bathtub"
  • · Replies 19 ·
Replies
19
Views
1K
High School Static friction needed for rolling without slipping
  • · Replies 4 ·
Replies
4
Views
2K
High School How will a spring stretch in the following cases?
  • · Replies 17 ·
Replies
17
Views
2K
Undergrad Rotational stability and Fosbury Flop questions
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad A Question About the Physical Explanation Behind Torque
  • · Replies 8 ·
Replies
8
Views
1K
Undergrad What Happens to Rotational Velocity When AC Part is Dropped?
  • · Replies 4 ·
Replies
4
Views
1K
High School Would the following test be proof of a successful propulsion system?
  • · Replies 4 ·
Replies
4
Views
1K
High School Two-body Kepler problem where the Sun is at rest in a coordinate system orbited by another body
  • · Replies 7 ·
Replies
7
Views
1K
Undergrad Finding yield strength with a load/displacement curve
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Excel projectile trajectory
  • · Replies 6 ·
Replies
6
Views
2K