Mechanics Forum

Post thread
High School How to find radius if I know angle and velocity
  • · Replies 6 ·
Replies
6
Views
17K
Undergrad Sailboat forces and Newton's 3rd law
  • · Replies 16 ·
Replies
16
Views
14K
Undergrad How Is the Net Moment Calculated in a Circular Disc?
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Maximizing Mass Airflow in Internal Combustion Engines
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad How to calculate work done by spring?
  • · Replies 12 ·
Replies
12
Views
19K
High School Apparent Suspension of Gravity
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Where Does the Energy Come From in Capillary Action?
  • · Replies 7 ·
Replies
7
Views
5K
High School Can the direction of friction force be opposite to the direction of motion?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Momentum and conservation of momentum
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Coriolis and different refererence frames
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How to use Lagrange approach to solve elastic collision?
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad What is the Force Exerted by a Ball Against a Wall Supported by a Thin Wire?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Would a knot in a falling chain make a difference?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad How did Newton derive his law of gravity?
  • · Replies 1 ·
Replies
1
Views
9K
Undergrad Work done to stretch a spring vs Work done by a spring?
  • · Replies 11 ·
Replies
11
Views
27K
Undergrad Motion of two objects in a perfectly inelastic collision
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Discrepancy in the solution of a nonlinear dynamic system
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Projectile motion: Bi level equation
  • · Replies 7 ·
Replies
7
Views
7K
Undergrad Understanding Viscosity and Its Relation to Friction in Fluid Mechanics
  • · Replies 4 ·
Replies
4
Views
5K
Graduate About Liouville's theorem(classical mechanics)
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Relative Motion of two cars are moving with constant velocities
  • · Replies 5 ·
Replies
5
Views
2K
High School Solve Your Kinematics Problem: Understanding Jumping on a Moving Object
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Angular momentum in planetary/satellite orbital systems
  • · Replies 4 ·
Replies
4
Views
7K
High School What air pressure can the human body survive?
  • · Replies 35 ·
2
Replies
35
Views
141K
Undergrad Conceptual question about torque
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad Perpetual motion machines - gravity an unconventional source?
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Angular-linear momentum conservation question
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Explanation of Angular Speed Change
  • · Replies 5 ·
Replies
5
Views
12K
Undergrad Conservation of momentum in an inelastic collision
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Acceleration down a frictionless ramp- what does a y represen in this case?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Wave eq., two real fields with interaction, wave speed.
  • · Replies 1 ·
Replies
1
Views
2K
High School Do the body have potential energy.
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad What Does 'I' Represent in the Moment Formula and How Does Tug of War Relate to Physics?
  • · Replies 2 ·
Replies
2
Views
2K
High School Fluid under centrifugal force (Basic)
  • · Replies 6 ·
Replies
6
Views
5K
High School Conservation of Momentum for Inelastic Collisions
  • · Replies 1 ·
Replies
1
Views
3K
Graduate (1 (+-) v/c) factor in the Lienard Wiechert potentials
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How Can I Optimize the Moment of Inertia for an Out-of-Balance Load?
  • · Replies 3 ·
Replies
3
Views
3K
High School Kinetic friction vs static friction?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Understanding the Equation for a Falling Leaf: A Simplified Explanation
  • · Replies 2 ·
Replies
2
Views
8K
Undergrad Gyroscopic Propulsion: Could Gyroscopes Levitate Objects?
  • · Replies 6 ·
Replies
6
Views
11K
Undergrad Is gravity affected by mass on the earth?
  • · Replies 18 ·
Replies
18
Views
13K
Graduate A Rotation with Translation Movement is standalone natural phenomenon.
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Cross product, dot product concepts
  • · Replies 10 ·
Replies
10
Views
14K
Undergrad Why Is My Gradient Too Small in the Young's Modulus Experiment?
  • · Replies 1 ·
Replies
1
Views
4K
High School Ball and chain- (kidding, no chain)
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Independant learning inbetween college and work
  • · Replies 1 ·
Replies
1
Views
1K
High School Q: Pilot in a Plane - Which Ball Hits Ground First?
  • · Replies 2 ·
Replies
2
Views
2K
High School Pilot Gravity: Which Direction Feels Most Gravity?
  • · Replies 13 ·
Replies
13
Views
3K
High School Lifting Weights on a Single Pulley System
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Calculate Acceleration Due to Gravity on Moon - 65 Characters
  • · Replies 2 ·
Replies
2
Views
2K
High School Launching a Penny Accurately - Advice Needed
  • · Replies 3 ·
Replies
3
Views
5K
High School Aeroplane & Cloud Mysteries: How Planes Pass Through Clouds
  • · Replies 5 ·
Replies
5
Views
2K
High School Acceleration has nothing to do with mass, but
  • · Replies 6 ·
Replies
6
Views
10K
Undergrad Why doesn't an object fall through the ground when it hits it?
  • · Replies 9 ·
Replies
9
Views
10K
Graduate Hydrogen atom as an example of perpetual motion
  • · Replies 15 ·
Replies
15
Views
5K
Graduate Combined rotational and translational kinetic energy
  • · Replies 1 ·
Replies
1
Views
2K
High School Does the earth rotate and undergo revolution with the same speed?
  • · Replies 8 ·
Replies
8
Views
3K
High School Unbelievable: Motorcycle T-bones Ford Expedition
  • · Replies 17 ·
Replies
17
Views
4K
Graduate Usefulness of multipole expansion of skalar potential
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Solve Physics Problems in Your Homebrew Video Game with These Tips!
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Ferromagnetic Windings in Electric Motors: Can They Operate?
  • · Replies 1 ·
Replies
1
Views
3K
High School Metal Ball & Ring: What Happens When Heated?
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Sliding Friction on a Wheel: How Does Static Friction Prevent Motion?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Deriving a Hamiltonian from dimensionless equations
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad The turning effect, what is actually physically happening that causes it?
  • · Replies 4 ·
Replies
4
Views
3K
High School Protection of car from thndrstrom
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Mathematical description of the valveless pulse jet
  • · Replies 2 ·
Replies
2
Views
3K
High School Does Spring Length Affect Its Extension?
  • · Replies 1 ·
Replies
1
Views
3K
High School Jumping out of a moving bus (quick question)
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Capaticance of thin spherical ball
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Why do Balloons filled with Air not fall at 9.6m/s/s?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Help understanding math on inclined plane example
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Magneitic fields can do no work
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Raising Shipwreck with Buoyancy Balloons - Calculations Needed?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Work done by rolling inverted pendulum system
  • · Replies 12 ·
Replies
12
Views
4K
Undergrad Calculating Distance with Constant Acceleration Formula
  • · Replies 25 ·
Replies
25
Views
5K
Undergrad How Does Physics Influence Stone Skipping in Water?
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Flow Rate of a Deflation Balloon
  • · Replies 9 ·
Replies
9
Views
9K
Undergrad Calculating torque/hp losses from wheel choices
  • · Replies 6 ·
Replies
6
Views
31K
High School Is the Coefficient of Static Friction Always Higher than Kinetic Friction?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Displacement in terms of acceleration and time
  • · Replies 3 ·
Replies
3
Views
14K
Graduate Right angle force on perfectly stretched string
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad How do opposing but equal forces affect an object and do they cancel out?
  • · Replies 4 ·
Replies
4
Views
9K
Graduate Annoying things in statistical mechanics
  • · Replies 1 ·
Replies
1
Views
5K
High School Vector addition using graphical method
  • · Replies 1 ·
Replies
1
Views
15K
High School Would you run faster in lower air pressure?
  • · Replies 12 ·
Replies
12
Views
7K
Can you see stars in South Carolina?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Can my cup hold more tea on the moon?
  • · Replies 2 ·
Replies
2
Views
2K
High School Need formula/help with mass air flow
  • · Replies 6 ·
Replies
6
Views
8K
Graduate Transit time of particle in a particle accelerator question
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Understanding the Components of Energy in Fluid Mechanics
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Over-determined systems, too many degrees of freedom. What's moving?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Unraveling the Mystery of the Speed of Sound
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Understanding Inertial Frames: How to Determine if You're in One
  • · Replies 29 ·
Replies
29
Views
4K
Undergrad Understanding the Physics of Elastic Collisions on a 45 Degree Slope
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Non-Headon Collision Vector Representation
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Why is Newton's law of gravitation different for non-spherical objects?
  • · Replies 6 ·
Replies
6
Views
4K
High School Calculate Pressure of Air in a Cylinder
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Where is the potential energy?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Coordinate transformation under rotation
  • · Replies 5 ·
Replies
5
Views
8K