Post a New Question

physics

posted by .

A person pushes a 11.3-kg shopping cart at a constant velocity for a distance of 19.4 m on a flat horizontal surface. She pushes in a direction 29.2 ° below the horizontal. A 44.6-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts?

  • physics -

    Given: m=11.3kg. A = 29.2 deg., Ff = 44.6N.

    Wc = mg = 11.3kg * 9.8N/kg = 110.74N. =
    Weight of cart.
    Fc = (110.74N,0deg.).
    Fp = 110.74sin(0) = 0 = Force parallel to surface.
    Fv = 110.74cos(0) = 110.74N. = Force
    perpendicular to surface.

    Ff = 44.6N = Force of fiction.

    Fn=Fap*cos29.2 - Fp - Ff = ma = 0, a=0.
    Fap*cos29.2 - 0 - 44.6 = 0,
    Fap*cos29.2 = 44.6,
    Fap = 44.6 / cos29.2 = 51.1N. = Force
    applied.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A person pushes a 10.5-kg shopping cart at a constant velocity for a distance of 25.7 m on a flat horizontal surface. She pushes in a direction 30.9 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. …
  2. Physics

    A person pushes a 23.4-kg shopping cart at a constant velocity for a distance of 31.1 m on a flat horizontal surface. She pushes in a direction 34.8 ° below the horizontal. A 38.5-N frictional force opposes the motion of the cart. …
  3. Physics

    A person pushes a 19.5-kg shopping cart at a constant velocity for a distance of 35.6 m on a flat horizontal surface. She pushes in a direction 25.4 ° below the horizontal. A 53.1-N frictional force opposes the motion of the cart. …
  4. Physics

    A person pushes a 23.5-kg shopping cart at a constant velocity for a distance of 30.3 m on a flat horizontal surface. She pushes in a direction 31.5 ° below the horizontal. A 37.3-N frictional force opposes the motion of the cart. …
  5. physics

    A person pushes a 24.7-kg shopping cart at a constant velocity for a distance of 34.0 m on a flat horizontal surface. She pushes in a direction 23.2 ° below the horizontal. A 48.5-N frictional force opposes the motion of the cart. …
  6. Physics

    A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.
  7. physics

    A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.
  8. physics

    A person pushes a 20.1-kg shopping cart at a constant velocity for a distance of 39.5 m on a flat horizontal surface. She pushes in a direction 27.3 ° below the horizontal. A 40.6-N frictional force opposes the motion of the cart. …
  9. Physic

    A person pushes a 13.7-kg shopping cart at a constant velocity for a distance of 16.3 m on a flat horizontal surface. She pushes in a direction 22.2 ° below the horizontal. A 48.7-N frictional force opposes the motion of the cart. …
  10. physics

    A person pushes a 16.5-kg shopping cart at a constant velocity for a distance of 36.6 m on a flat horizontal surface. She pushes in a direction 27.9 ° below the horizontal. A 48.1-N frictional force opposes the motion of the cart. …

More Similar Questions

Post a New Question