A level System of Forces and Resolution Quiz 1

15 Questions

Quiz Description

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This A level Physics quiz takes you through the system of forces and resultant forces. Resultant forces come as a result of two or more forces (system of forces) acting on a body at the same time. And the resultant force acting on a body can be zero if two forces are acting in opposite directions and on the same body. Each time a body moves, it does so due to the fact that the resultant forces on that body are not zero.

As a physics student, you need to understand how to solve a system of forces and also how to find the resultant force of a system of forces. If you’re facing difficulties, don’t bother, this quiz is here to guide you. Good luck. 

Good luck

1:

Two blocks connected to each other by a string is hung to the ceiling by connecting another string to the upper block. When a force F is applied on the string, it produces an acceleration of 2 m/s^2. If T and T’ are the tensions in two parts of the string, then which of the following is true?


Correct
  • 1:
    T = 70.8 N and T’= 47.2 N
  • 2:
    T = 70.8 N and T’= 0
  • 3:
    T = 70.8 N and T’= 58.8 N
  • 4:
    T = 58.8 N and T’= 47.2 N
2:

Combined effect of several forces is known as


Correct
  • 1:
    net force
  • 2:
    resultant force
  • 3:
    normal force
  • 4:
    weight
3:

Two perpendicular components are


Correct
  • 1:
    independent of each other
  • 2:
    dependent on each other
  • 3:
    anti-parallel to each other
  • 4:
    parallel to each other
4:

An object is in equilibrium if the resultant force on it is


Correct
  • 1:
    increasing
  • 2:
    decreasing
  • 3:
    zero
  • 4:
    becomes constant
5:

Number of forces a falling tennis experiences is


Correct
  • 1:
    1
  • 2:
    3
  • 3:
    2
  • 4:
    4
6:

If the resultant vector forms an angle of 45 degrees, then the two components are


Correct
  • 1:
    parallel to each other
  • 2:
    perpendicular to each other
  • 3:
    anti-parallel to each other
  • 4:
    anti-perpendicular to each other
7:

 Frictional force is depends upon ______.


Correct
  • 1:
    The surface area in contact
  • 2:
    Roughness of surface
  • 3:
    Both A and B
  • 4:
    None of the above
8:

The process of finding out the resultant force is known as _____.


Correct
  • 1:
    Superposition of forces
  • 2:
    Addition of forces
  • 3:
    Resolution of forces
  • 4:
    Composition of forces
9:

According to Lami’s theorem, a body is in equilibrium condition if each force among three ____________ is proportional to the sine angle between the other two.


Correct
  • 1:
    coplanar, collinear forces
  • 2:
    collinear, non-concurrent forces
  • 3:
    coplanar, non-concurrent forces
  • 4:
    coplanar, concurrent forces
10:

The resultant of two equal forces P making an angle 2θ is given by


Correct
  • 1:
    2Psinθ
  • 2:
    2Pcosθ
  • 3:
    2Ptanθ
  • 4:
    2Pcotθ
11:

A fifth force is introduced to the system of forces (9i-j)N, (4i+6j)N, (-5i-2j)N, and  (2i+j)N to bring the system to equilibrium. What is the fifth force?


Correct
  • 1:
    (-5i+5j)N
  • 2:
    (-10i-4j)N
  • 3:
    (5i-11j)N
  • 4:
    (3i+4j)N
12:

Two forces with magnitude F have the resultant of same magnitude F. What is the angle between the forces?


Correct
  • 1:
    45 degrees
  • 2:
    60 degrees
  • 3:
    120 degrees
  • 4:
    150 degrees
13:

What is the angle between the forces if two forces with equal magnitudes F act on a body and the magnitude of the resultant force is F/3?


Correct
  • 1:
    arcos(17/18)
  • 2:
    arcos(2/3)
  • 3:
    arcos(8/19)
  • 4:
    arcos(-1/3)
14:

 In which direction should the force be applied to balance a force in the direction of North-East direction?


Correct
  • 1:
    South
  • 2:
    West
  • 3:
    South-West
  • 4:
    North-East
15:

Which of the following sets of concurrent forces are in equilibrium?


Correct
  • 1:
    F1=3N, F2=5N, F3=1N
  • 2:
    F1=3N, F2=5 N,F3=6N
  • 3:
    F1=3N, F2=5N, F3=9N
  • 4:
    F1=3N, F2=5N, F3=15N

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A level System of Forces and Resolution Quiz 1
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