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3 November, 09:21

A 20kg suitcase on a flat surface is pushed by a force of 100N downwards at an

angle of 60 degrees with the horizontal. The suitcase moves along the floor. What is

the normal force from the floor to the suitcase?

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Answers (1)
  1. 3 November, 09:42
    0
    282.6 N

    Explanation:

    Draw a free body diagram of the suitcase. There are three forces:

    Weight force mg pulling down,

    Normal force N pushing up,

    and 100 N down at angle 60° with the horizontal.

    Sum of forces in the y direction:

    ∑F = ma

    N - mg - 100 sin 60° = 0

    N = mg + 100 sin 60°

    N = (20 kg) (9.8 m/s²) + 100 sin 60°

    N = 282.6 N

    Round as needed.
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