Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

R asked in Science & MathematicsPhysics · 7 years ago

When I push john in his stroller the force of my push acts along the handle which is at a 50 degree angle to the horizontal.?

If John & the stroller have a mass of 25 kg, and the stroller is essentially frictionless, (a) how hard do I need to push on the handle to accelerate the stroller from rest to 1.3 m/s in 2 seconds? (b) What is the normal force on the stroller during this acceleration?

Draw the free body diagram for the Atwood machine and solve for the tension on each mass.

1 Answer

Relevance
  • Whome
    Lv 7
    7 years ago
    Favorite Answer

    if we assume constant acceleration on the stroller on a horizontal surface.

    a = Δv / t

    a = (1.3 - 0) / 2.0

    a = 0.65 m/s²

    If F is the pushing force on the handle

    F = ma

    Fcos50 = 25(0.65)

    F = 25 N

    The normal force of the ground on the stroller will be the weight of the stroller plus the vertical component of the applied force

    Fn = mg + Fsinθ

    Fn = 25(9.8) + 25sin50

    Fn = 264 N

    There is no information available to make an attempt at drawing an Atwood machine FBD.

    As a form of exchange, please remember to vote a "Best Answer" from among your results. This is not the same as "like" or "thumbs up" (which are also nice) because points are only awarded for asker's "Best Answer".

Still have questions? Get your answers by asking now.