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  1. What is relativistic mass and why it is not used much? - Physics …

    Aug 9, 2015 · Note that whether or not to use relativistic mass to a large extent is a matter of convention, convenience, and semantics as long as it is used properly.

  2. Calculate time given distance, mass, and force - Physics Forums

    Jul 3, 2017 · > Is there any equation to find the time taken for an object to travel a certain distance if I am given the distance the object traveled, the mass of the object, and a constant force that …

  3. Do Photons have Mass? - Physics Forums

    Aug 24, 2015 · In physics, the most important definition of a bare mass (we are not going to deal with effective mass that is a part of solid state/condensed matter physics) is what is known as …

  4. Does a Scale Measure Our Weight or Mass? • Physics Forums

    Feb 17, 2008 · When I step on a scale I see that it says...70kg. We typically call this value weight? However, kg is used for "mass" and not "weight". So when we say 70kg do we mean that my …

  5. How Do I Calculate Uncertainty in My Physics Lab Report?

    Apr 28, 2014 · I am currently working on my physics lab report, and my question is "What effect does the mass have on the change of acceleration?" The lab currently consist of two pulleys …

  6. Ideal Vs Real Mass Pulley system - Physics Forums

    Apr 18, 2021 · Below is an ideal mass pulley system that we encounter in many problems under Newton's Second Law of Motion questions. Its supposed to be massless and frictionless i.e. …

  7. Explaining Fg = mg: Net Force, Mass and Acceleration - Physics …

    Sep 12, 2009 · Homework Statement we can say that the force of gravity is equal to mass times acceleration were the acceleration is equal to gravity sense gravity is an acceleration because …

  8. The relationship between friction and mass • Physics Forums

    Jun 17, 2020 · Mass is directly proportional to static and kinetic friction and inversely proportion to the coefficient of friction. Material affects the coefficient of...

  9. Pounds is a unit of mass or weight - Physics Forums

    Sep 28, 2008 · I've been looking around and some places tell me pounds is a english unit of weight and other tell me it's a unit of mass i.e lbf and lbm. I thought it was a unit of weight but …

  10. How to Apply Newton's Second Law to Variable Mass Systems

    Aug 15, 2023 · Just like Equation (1), Equation (2) reduces to the standard form of Newton’s second law when the system’s mass is constant. However, in addition to that, and just like its …