Results 1 to 2 of 2

Math Help - newton's third law, frictional force, acceleration

  1. #1
    Senior Member furor celtica's Avatar
    Joined
    May 2009
    Posts
    271

    newton's third law, frictional force, acceleration

    a truck driver loads two identical untethered crates stacked one upon the other. no sliding takes place. make separate sketches to show the forces acting on each crate when the truck is travelled on a horizontal straight road while accelerating.

    ok so please i just want a 'correct' or 'incorrect' type answer here, no explanations please.

    forces on upper crate:
    weight (downwards), normal contact force exerted by lower crate (upwards), frictional force exerted by lower crate (forwards)
    forces on lower crate:
    frictional force exerted by upper crate (backwards), normal contact force exerted by upper crate (downwards), weight (downwards), normal contact force exerted by floor (upwards), frictional force exerted by floor (forwards)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Dec 2010
    Posts
    470
    Quote Originally Posted by furor celtica View Post
    a truck driver loads two identical untethered crates stacked one upon the other. no sliding takes place. make separate sketches to show the forces acting on each crate when the truck is travelled on a horizontal straight road while accelerating.

    ok so please i just want a 'correct' or 'incorrect' type answer here, no explanations please.

    forces on upper crate:
    weight (downwards), normal contact force exerted by lower crate (upwards), frictional force exerted by lower crate (forwards)
    forces on lower crate:
    frictional force exerted by upper crate (backwards), normal contact force exerted by upper crate (downwards), weight (downwards), normal contact force exerted by floor (upwards), frictional force exerted by floor (forwards)
    Sounds correct to me.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. time, force, distance, acceleration
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: September 12th 2011, 06:37 AM
  2. Force and acceleration question
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: August 12th 2010, 10:27 PM
  3. M1 question- Resolving frictional forces
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: March 15th 2010, 02:07 PM
  4. Frictional Force
    Posted in the Algebra Forum
    Replies: 5
    Last Post: January 29th 2010, 03:03 PM
  5. science- force mass and acceleration
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: March 23rd 2008, 04:03 AM

Search Tags


/mathhelpforum @mathhelpforum