Resultants, Equilibrants and Components

1. Three forces act concurrently on an object in equilibrium. These forces are 10 N, 8N, and 6 N. The resultant of the 6 N and 8 N forces has a magnitude of 

        a) 0.0 N     b) between 0.0 and 10 N     c) 10 N more than 10 N

2. As the angle between two concurrent forces is increased from 15 degrees to 75 degrees, the magnitude of their equilibrant         a) decreases             b) increases         c) remains the same

3. Which combination of concurrent forces could NOT produce equilibrium ?

        a) 5 N, 10 N and 25 N   b) 10 N, 15 N, and 25 N   c) 15 N, 20 N, and 25 N d) 20 N, 20 N, and 25 N

4. As the angle between a force and level ground decreases from 60o and 30o, the vertical component of the force         a) decreases         b) increases         c) remains the same

5. A person exerts a 300. N force on the handle of a shovel that makes an angle of 60 degrees with the horizontal ground. The component of the 300. N force that acts perpendicular to the ground is approximately         a) 150 N         b) 260 N         c) 300. N         d) 350 N

6.Two 10.0 N forces act concurrently on a point at an angle of 180o to each other. The magnitude of the resultant of the two forces is   a) 0.00 N            b) 10.0 N            c) 18.0 N             d) 20.0 N

7. Two forces act on an object concurrently. The resultant will be greatest when the angle between the forces is         a) 0 degrees        b) 60 degrees      c) 90 degrees       d) 180 degrees

8. 28.A force of 100. N is applied to an object at an angle of 30o from the horizontal. What is the magnitude of the vertical component of this force ?

     a) 0 N                b) 50.0 N             c) 86.7 N             d) 100. N

9.A force of 6.0 N north and a force of 8.0 N east act concurrently on an object. The magnitude of the resultant of the two forces is  

    a) 1.3 N             b) 2.0 N                c) 10. N              d) 14 N

10.Two concurrent forces have a maximum resultant of 45 N and a minimum resultant of 5.0 N. What is the magnitude of each of these forces ?

a) 0.0 N and 45 N     b) 5.0 N and 9.0 N     c) 20. N and 25 N d) 0.0 N and 50. N