Mechanics Forum

Post thread
Undergrad Work done by friction and change in mechanical energy
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Water rocket and water velocity
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Torque needed to mantain a disk rotating
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Relaxation Time in Damped Harmonic Oscillators
  • · Replies 1 ·
Replies
1
Views
18K
High School Hooke's law - why k is constant
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Laminar flow exits an inclined tube
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad How Does a Ball Behave on an Infinite Plane When the Plane Stops Abruptly?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Pure rolling with zero friction
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Topic: Modeling Time and Velocity Using Integers in Relation to the Real Numbers
  • · Replies 65 ·
3
Replies
65
Views
6K
Undergrad Acceleration of Submarine when Ejecting Water from its Tanks
  • · Replies 24 ·
Replies
24
Views
5K
Undergrad What's the pressure acting on this fluid?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Friction torque vs. contact area
  • · Replies 6 ·
Replies
6
Views
9K
High School How hard can you push something given grip strength?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad How does potential energy increase, if height increases?
  • · Replies 2 ·
Replies
2
Views
4K
High School Direction of motion of conductor (force)
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Curved motion, r(φ) when r is accelerating
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Tire stuck in mud - energy conservation
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Why is work negative when we push two opposite particles tog
  • · Replies 7 ·
Replies
7
Views
3K
High School Resources for Practicing Drawing Free Body Diagrams
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Does Football Inflation Follow Gas Law Principles?
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad At what angle do you shoot a projectile so height=range?
  • · Replies 15 ·
Replies
15
Views
5K
Graduate How to understand potential energy in Lagrangian
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Material Model: initial conditions of equation?
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Projectiles in Air: Is Under Spin Enough to Rise?
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Can Balanced Forces Perform Work?
  • · Replies 20 ·
Replies
20
Views
5K
High School How Can I Calculate the Force Needed to Push a Trolley Over a Bumpy Floor?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why is work done by a nonconservative force negative
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Work in Uniform Circular Motion
  • · Replies 3 ·
Replies
3
Views
3K
High School Are inductors so powerful?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Why does velocity increase force according to F_m = QvB?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Calculate the damage of the car after collision
  • · Replies 15 ·
Replies
15
Views
5K
Undergrad How Can I Measure Torque for a Pedal-Powered Rotary Vane Pump Project?
  • · Replies 7 ·
Replies
7
Views
2K
High School Turning Radius of 40 foot Cotton Trailer
  • · Replies 24 ·
Replies
24
Views
15K
High School How Does Weight Change When an Object Falls?
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad Object moving in the opposite direction of a single force
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Statics: Tension or Compression?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Understanding Normal Force Direction in Leaning Ladder & Cable Beam Systems
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Mpemba effect - just how a freezer works?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Center on mass trigonometric trick
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Macroscopic shape of rocket exhaust
  • · Replies 3 ·
Replies
3
Views
2K
High School The Weight of a Lion's Blow: Gravity vs Force
  • · Replies 15 ·
Replies
15
Views
3K
Graduate How can calculus be applied to determine wind force and moments on a wall?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate A Newtonian system mathematically always a trivial bundle?
  • · Replies 1 ·
Replies
1
Views
949
Undergrad Understanding Position Derivatives: Does Logic Follow?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad What are harmonic oscillators and physical systems?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Finding Position from Equations of Motion at Different Times
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Finding the pressure at a given height?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Carrier particles and E-Field Propagation
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Impose Uniqueness on Diagonalization of Inertia Tensor?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Discovering the Origins of Conservation Laws in Particle Simulations
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Spinning bottle on the surface of the water
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Bowling Ball Problem: Is Friction Force All Absorbed in Rotation?
  • · Replies 59 ·
2
Replies
59
Views
10K
Graduate Behaviour of MNPs under pulsed-DC MF
  • · Replies 1 ·
Replies
1
Views
883
Graduate Ultrasound absorption by particles in water
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Incompatibility between Quantum Mechanics and Relativity
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What is the Velocity of Air Flow between Two Interconnected Balloons?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Proof of 2v Velocity When Gun Fired Aboard Plane
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why Does a Spinning Egg Stand Up and What Energy Changes Are Involved?
  • · Replies 12 ·
Replies
12
Views
2K
High School How did Newton discover universal gravitational constant?
  • · Replies 6 ·
Replies
6
Views
8K
Undergrad Finding spring constant from a graph
  • · Replies 3 ·
Replies
3
Views
7K
Undergrad Required water pressure to find air leak
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Flow Rate in Pipe: Q, v, A Explained
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Conservation of Energy Confusion
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Gravity and velocity of a body in an elliptical orbit
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Where Does the Intensity of Sound Waves Go in Complete Silence?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad How does an Ion generator work in space?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad We can perceive position, velocity, acceleration, jerk
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Position and speed are enough in a physical system?
  • · Replies 3 ·
Replies
3
Views
1K
High School How Do You Measure the Length of a Pendulum with Non-Spherical Bobs?
  • · Replies 3 ·
Replies
3
Views
2K
High School The height in the potential gravitational energy
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Testing Spring Force in Machine Movement
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Plunging into water feet first, as streamlined as you can be
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Pressure and Weight in Water Tank
  • · Replies 6 ·
Replies
6
Views
13K
Undergrad Classical mechanics changing mass
  • · Replies 4 ·
Replies
4
Views
1K
High School K.E. and P.E. in a Pendulum and Spring
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Vibratory Motion: Resonance Sharpness, Amplitude & Damping
  • · Replies 3 ·
Replies
3
Views
2K
High School Is This A Level Physics Question Impossible?
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Calculating Average Power for Sinusoidal Acceleration with an Accelerometer
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad Is angular momentum always conserved?
  • · Replies 13 ·
Replies
13
Views
5K
High School Why does a greased needle float on water?
  • · Replies 18 ·
Replies
18
Views
7K
High School Does air in an open bag add weight?
  • · Replies 7 ·
Replies
7
Views
8K
Undergrad Definition of inertial reference frames
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Is it possible to compress speed into a material?
  • · Replies 1 ·
Replies
1
Views
942
Undergrad Why Is My MATLAB Program Returning Incorrect Values for Airplane Path?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Centrifugal force and attraction force
  • · Replies 2 ·
Replies
2
Views
3K
High School What Determines the Direction of Acceleration in Circular Motion?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Deriving the doppler shift equation for sound
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Effects of press on a submerged chamber w/complex sidewall
  • · Replies 42 ·
2
Replies
42
Views
4K
High School Free-Body Diagrams: Tension & Weight of Blocks A & B
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad A Curious question About Ballistic Pendulum Solution
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Horsepower vs hill gradient problem
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad Reaction force at the top of a rollercoaster loop
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Conservation of momentum of two boats
  • · Replies 27 ·
Replies
27
Views
5K
High School Is there torque involved in lifting a pot
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Acceleration due to gravity of a rocket
  • · Replies 12 ·
Replies
12
Views
6K
Undergrad How does a purse hook/hanger works?
  • · Replies 7 ·
Replies
7
Views
11K
High School Elastic and inelastic collisions
  • · Replies 10 ·
Replies
10
Views
5K
High School Maximizing Projectile Efficiency: Energy Conservation in High School Physics
  • · Replies 3 ·
Replies
3
Views
2K
High School Why pressure inside a liquid in different shaped vessels at
  • · Replies 5 ·
Replies
5
Views
2K
Graduate What Are Shock Diamonds and How Do They Form?
  • · Replies 1 ·
Replies
1
Views
4K