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-   -   A package of mass M slides down a surface of constant gradient. What is the resultan (https://www.askmehelpdesk.com/showthread.php?t=560393)

  • Mar 7, 2011, 04:06 PM
    flufy87
    A package of mass M slides down a surface of constant gradient. What is the resultan
    A package of mass M slides down a surface of constant gradient.

    What is the resultant acceleration of the package if;

    *
    M = 155 kg
    *
    Gradient = 1 in 10
    *
    Total resistance to motion = 20 N
    *
    g=9.81 m/s2
  • Mar 7, 2011, 07:27 PM
    jcaron2
    The gravitational force trying to pull the package down the ramp is , where is the angle of the ramp. Can you calculate the force?

    Meanwhile, the force opposing the downward slide is 20N. So between that and the gravitational force pulling it down the ramp, what's the total force acting on the package?

    Once you know the force, do you know how to calculate the acceleration?
  • Mar 8, 2011, 08:34 AM
    flufy87
    Comment on jcaron2's post
    I found the force then how I do calculate the acceleration can you help me please
  • Mar 8, 2011, 12:37 PM
    Unknown008

    Can you show us how you got the force?

    Also, to get the acceleration, use: F = ma

    where F is the net force acting on the package, m is the mass and a is the acceleration.
  • Mar 9, 2011, 04:57 AM
    helping_hand_D
    f=0 there is no force... you got a solid mech test on the 9th don't you loool
  • Mar 9, 2011, 07:37 AM
    jcaron2
    Quote:

    Originally Posted by helping_hand_D View Post
    f=0 there is no force ..... you got a solid mech test on the 9th dont you loool

    Wrong! It has a mass of 155 kg. I can assure you that gravity is pulling on it.

    Flufy87, Now that Unknown008 told you how to calculate the acceleration, what do you get for an answer?

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