1. Questions

physics

An object act upon by two forces 5N and 12N. calculate the resultant Of the two forces if the two forces act perpendicular to each other, if the two forces act at angle 40 degree to each other, if the two forces act at an angle 125 degree to each other

  1. 👍
  2. 👎
  3. 👁
Tawheed Mahmud

  1. 5 in x direction, 12 in y direction
    hypotenuse = sqrt (25 +144) = 13 N
    angle above x axis = tan^-1(12/5)

    5 in x dir and 12 at 40 deg up
    x component = 5 + 12 cos 40 = 14.2
    y component = 12 sin 40 = 7.71
    hypotenuse = sqrt ( 14.2^2 + 7.71^2)
    angle above x axis = tan^-1 (7.71/14.2)

    last one the same way

    1. 👍
    2. 👎
    👤
    Damon

  2. a. Fr = 5 + 12i = 13N.[67.4o]. = Resultant force.

    b. Fr = 5 + 12[40o].
    Fr = (5+12*cos40) + (12*sin40)I = 14.2 + 7.71i = 16.2N.[28.5o].

    c. Fr = 5 + 12[125o].
    Fr = (5+12*cos125) + (12*sin125)I
    Fr = -1.88 + 9.83i =

    1. 👍
    2. 👎
    henry2,

  4. Thank u

    1. 👍
    2. 👎
    Desmond

  5. Thanx

    1. 👍
    2. 👎
    Phillip

  6. 12n-5n=7n

    1. 👍
    2. 👎
    Amutuhaire dorothy

  8. An object is acted upon by two forces 5N and 12N. Calculate the resultant of the two forces if the forces act perpendicular to each other.
    Cosine rule:a²=b²+c²-2bc cos A
    r=360-(40+40)
    r=360°-80
    r=280°/2=140°
    Using the cosine rule:
    R²=Z²+Y²-(2ZY) cos r
    R²=5²+12²-(2*5*12) cos140°
    R²=25+144-120*(-0.7660)
    R²=169+91.92
    R²=260.92
    R=√260.92
    R=16.1530
    Using the sine rule
    Sine z/5=sine140/16.1530
    Sine z/5=0.6427/16
    1530
    Cross multiply
    16.1630sin z=5*0.6427
    Divide both sides by the coefficient of sin z
    Sin z=0.1989
    Z=sine^_1 0.1989
    Z=sine^-1 0.1989
    Z=11.5

    1. 👍
    2. 👎
    Betty

  9. 172&

    1. 👍
    2. 👎
    Soliu

Respond to this Question

First Name

Your Response

Similar Questions

  1. SEKGOSESE

    2 forces of 5N and 7N respectively act on an object.a)When will the resultant of two vectors at a maximum?b)when will the resultant of the two vectors be at a minimum?c)What are the maximum and minimum resultants of the two

  2. Physics

    Two forces of 5n and 7n respectively act an object.What is the maximum and minimum resultant of the two forces.Draw a diagram to show the minimum and maximum resultants.

  3. Physical science

    two forces of 5N and 12N respectively act on the same point.show how you would determine the magnitude of the resultant by using the tail to head and tail to tail methods and Pythagoras theorem

  4. Physics

    two forces one of 12n and another of 24n,act on abody in such away that they make an angle of 90 with each other find the result of the two forces ?

  1. pre calculus

    Forces with magnitudes of 250 pounds and 130pounds act on an object at angles 45degrees and -60degrees respectively with the positive axis. Find the direction and magnitude of the resultant of these forces.

  2. science

    The following forces act on a body:F1=5,3Nupwards.F2=2,2N upwards and F3=10,7 N downwards.Determine the resultant of the three forces using a sketch of head to tail vector diagram and check your answer with equation :FR=F1+F2+F3

  3. Science

    Force F1 of 3.5N act on an object to the right and force f2 of 4.3N act on the object towards the left....Determine the resultant of the forces using accurate tail to head vector diagram use a scale of 10mm:1N

  4. physics

    a body is under of 2 forces 7n and 10n find the resultant of 2 forces if (a)the forces are parallel and act in thesame direction (b)the forces are parallel and act in opposite direction(c)the two forces are inclined and act at an

  1. Math

    Three forces with magnitudes of 70 pounds, 40 pounds, and 60 pounds act on an object at angles of -30 degrees, 45 degrees, and 135 degrees, respectively, with the positive x-axis. Find the direction and manitude of the resultant

  2. physics

    Two forces act on an object. The magnitude of the net force acting on the object a. equals the sum of the magnitude of the two forces b. equals the difference in the magnitudes of the two forces c. equals the average of the two

  3. calculus

    three forces with magnitudes 100, 50, and 80 lb act on an object at angles of 50 degree, 160 degree, and -20 degree respectively. ind the direction and magnitude o the resultant force.

  4. physics

    Three forces of magnitude 15N, 10N and 5N act on a particle in the direction which make 120° with one another. Find the resultant and the angle the resultant makes with the x-axis?

You can view more similar questions or ask a new question.