Mechanics Forum

Post thread
Graduate Tangential and centripetal acceleration in circular motion
  • · Replies 4 ·
Replies
4
Views
2K
High School Force, mass, acceleration, kinetic energy
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Direction of momentum transfer?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Why does the equation for elastic collisions work like this?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Unusual gravitational observation....answers?
  • · Replies 27 ·
Replies
27
Views
3K
Undergrad Why do some devices work for a short time after unplugged?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad A question about Noether theorem
  • · Replies 3 ·
Replies
3
Views
2K
High School Dynamic Fluid (airplane landing/decrease altitude)
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Why pressure decreases with increase in velocity
  • · Replies 17 ·
Replies
17
Views
37K
Graduate How does this hoverboard work?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Conservation of angular momentum in a two ball collision
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Position vs. time graph and the derivative
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Programatically measure air pressure within a piston
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Speed vehicle travelling on impact
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Speed,mass,energy and a question.
  • · Replies 2 ·
Replies
2
Views
909
Undergrad Vacuum infusion bag - can external pressure help?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Why does adding more pulleys increase the force on a block?
  • · Replies 21 ·
Replies
21
Views
5K
Undergrad Why can I assume the force to be constant in this interval?
  • · Replies 3 ·
Replies
3
Views
2K
High School Going beyond solar system with high speed
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Do objects in circular motion also *have* to undergo rotation?
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad How does drag force change the maximum height of projectile?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Help with putting a box on a shelf (gravity?)
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Finding length of an arc produced by projectile
  • · Replies 3 ·
Replies
3
Views
3K
High School How to stop insulation from floating when flooded
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How Much HP Needed to Reach 300 MPH in a Nissan 350z?
  • · Replies 36 ·
2
Replies
36
Views
6K
Graduate Orbital angular momentum wavefront velocity
  • · Replies 2 ·
Replies
2
Views
1K
High School How fast would a car be going to throw a 50lb object 38ft?
  • · Replies 4 ·
Replies
4
Views
1K
Graduate An odd question regarding Bernoulli's Principle
  • · Replies 5 ·
Replies
5
Views
3K
Graduate When exactly does error -> zero in calculus-based mechanics?
  • · Replies 6 ·
Replies
6
Views
2K
Saw this at work -- an air bubble trapped right under the water stream
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Random question regarding centrifugal force.
  • · Replies 8 ·
Replies
8
Views
2K
High School How can a glider or an airplane do a loop without thrust
  • · Replies 33 ·
2
Replies
33
Views
5K
Undergrad Why isn't there any friction in magnet trains?
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Why Is the Center of Newton's Rings Dark?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Solving Preloaded Springs w/ Mass: Can Force Overcome Preload?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Unraveling the Mystery of "Floating Rule" in an Experiment
  • · Replies 7 ·
Replies
7
Views
2K
High School Hey guys, I'm going to say right up front that I haven't a c
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Why does friction act in the normal direction
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad What speeds could a maglev train reach in a vaccum?
  • · Replies 5 ·
Replies
5
Views
2K
High School Friction of a box pushed against a wall using 200N
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Gravity at relativistic speed
  • · Replies 18 ·
Replies
18
Views
2K
Undergrad Calculating inertial moment of a disk
  • · Replies 12 ·
Replies
12
Views
2K
High School What Causes a Particle to Move in a Circular Trajectory Due to Coriolis Force?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Back pressure on a pipe by squeezing it shut
  • · Replies 23 ·
Replies
23
Views
3K
High School What absorbs impact better, hard plastic or silicon?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate The Bernoulli principle from the perspective of statistical mechanics
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Water in capillary tube and friction
  • · Replies 11 ·
Replies
11
Views
2K
High School Physics Egg Car Project Tips: How to Safely Transport an Egg from a 1m Ramp
  • · Replies 1 ·
Replies
1
Views
3K
High School Understanding Work and Kinetic Energy: Examples and Calculations Explained
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Strength of springs - length of travel vs tension weight
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Increasing car efficiency by rerouting airflow?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Blackbody and gas molecule speed graphs look similar. Why?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Mythbusters: Blow your own sail
  • · Replies 97 ·
4
Replies
97
Views
15K
Graduate Can propane/air mixtures be safely ignited at extremely high pressures?
  • · Replies 1 ·
Replies
1
Views
2K
High School Can Magnus Effect be Used to Create a Miniature?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Reynolds number of washing machine like object
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Work done on brakes vs kinetic energy lost by vehicle
  • · Replies 2 ·
Replies
2
Views
2K
High School How does a simple balance scale work?
  • · Replies 3 ·
Replies
3
Views
6K
Undergrad Chimney vs building demolition physics
  • · Replies 9 ·
Replies
9
Views
3K
High School Kinematics Equation: S = Ut + ½a t^2 - Why "s"?
  • · Replies 17 ·
Replies
17
Views
5K
High School Bike vs. Skateboard Acceleration (downhill with no pedaling)
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Two ways of calculating speed?
  • · Replies 11 ·
Replies
11
Views
2K
High School Why is 1 lbm considered equal 1 lbf?
  • · Replies 22 ·
Replies
22
Views
22K
Undergrad Should I consider Linear Kinetic Energy in this Equation
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Derivation of Rocket Equation Using Relative Velocity
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Solving Treadmill Friction Problem for VR Build
  • · Replies 24 ·
Replies
24
Views
2K
Undergrad Does a rod rotate under gravity?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Rocket equations of motion w/ drag and gravity
  • · Replies 7 ·
Replies
7
Views
6K
Undergrad Confusion about angular speed and angular acceleration
  • · Replies 5 ·
Replies
5
Views
2K
High School Weight and the Archimedes Principle
  • · Replies 23 ·
Replies
23
Views
4K
Graduate Does pressure affect the shape of water drops according to Gibb's phase rule?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Rotational Motion - Understanding the Idea
  • · Replies 3 ·
Replies
3
Views
1K
Flexible Pipe Motion: Explained
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad What Happens to Kinetic Energy in Inelastic Collisions in Space?
  • · Replies 19 ·
Replies
19
Views
4K
Undergrad How will the two balls move after the collision?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Motocross: Physics of the Scrub
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad How Fast Does Air Escape from a Pressurized Container?
  • · Replies 23 ·
Replies
23
Views
3K
Graduate Statistical Mechanics -- many copies of a canonical ensemble
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Air volume in the tank, volume vs pressure
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Where the Angular Velocity Vector Coming From?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Gas Law applying to air vs water vapor
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Would greater flow take precedence over velocity in pressure
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Why is (not) the resulting unit of this equation rad/s ?
  • · Replies 21 ·
Replies
21
Views
7K
High School Flywheel Inertia: Calculating Mass & Radius
  • · Replies 31 ·
2
Replies
31
Views
6K
Undergrad Acceleration w/o Velocity Change: Gravity Ques
  • · Replies 29 ·
Replies
29
Views
3K
Undergrad Need help with overly ambitious rocket project
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How can Bernoulli's principle help explain pressure changes in fluid dynamics?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Dynamics of pumping fluid into a cylinder with an air hole?
  • · Replies 4 ·
Replies
4
Views
2K
How does water escape the pot?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How does the luminosity equation work?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Underwater Propulsion: Pumping Out Water for Acceleration
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Air velocity inside a pipe (natural convection)
  • · Replies 22 ·
Replies
22
Views
4K
Undergrad Minimum tangential speed for orbit
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Momentum-Determining External Forces
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Thoughts on Newton's Bucket and the relativity of rotation
  • · Replies 6 ·
Replies
6
Views
3K
High School Whacking a golfball down a marble corridor
  • · Replies 4 ·
Replies
4
Views
2K
High School Average Speed and Average Power confusion
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why does external pressure on a liquid increase vapor pressure
  • · Replies 31 ·
2
Replies
31
Views
11K
Graduate 1st, 2nd and mass moment of inertia
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Change in internal energy during water vaporization
  • · Replies 1 ·
Replies
1
Views
3K