Force Determination mcq on electrical engineering
Force can be defined as:
a) The amount of matter in an object
b) The velocity of an object
c) The interaction between two objects
d) The energy stored in an object
Answer: c) The interaction between two objects
Newton’s second law of motion states that the force acting on an object is equal to:
a) Its mass multiplied by its acceleration
b) Its velocity divided by its acceleration
c) Its displacement multiplied by its acceleration
d) Its mass divided by its acceleration
Answer: a) Its mass multiplied by its acceleration
The SI unit of force is:
a) Meter per second (m/s)
b) Newton (N)
c) Kilogram (kg)
d) Joule (J)
Answer: b) Newton (N)
Which of the following is not a fundamental force in nature?
a) Gravitational force
b) Electromagnetic force
c) Strong nuclear force
d) Frictional force
Answer: d) Frictional force
The force of gravity acting on an object is dependent on:
a) The object’s mass only
b) The object’s weight only
c) The object’s mass and weight
d) The object’s volume only
Answer: a) The object’s mass only
The normal force is the force exerted:
a) By an object on a surface in contact with it
b) By a surface on an object in contact with it
c) By gravity on an object
d) By an electric field on a charged object
Answer: b) By a surface on an object in contact with it
Which of the following is an example of a non-contact force?
a) Friction force
b) Tension force
c) Magnetic force
d) Normal force
Answer: c) Magnetic force
The force required to keep an object moving at a constant speed in the absence of other forces is called:
a) Frictional force
b) Applied force
c) Net force
d) Equilibrium force
Answer: a) Frictional force
The force exerted by a stretched or compressed spring is called:
a) Tension force
b) Normal force
c) Spring force
d) Centripetal force
Answer: c) Spring force
The force exerted by a fluid on an object immersed in it is called:
a) Buoyant force
b) Tension force
c) Centripetal force
d) Gravitational force
Answer: a) Buoyant force
Which of the following statements about action-reaction forces is true?
a) Action and reaction forces act on different objects
b) Action and reaction forces always have the same magnitude
c) Action and reaction forces cancel each other out
d) Action and reaction forces are always in the same direction
Answer: b) Action and reaction forces always have the same magnitude
The force of air resistance acting on a falling object depends on:
a) The object’s mass
b) The object’s velocity
c) The object’s shape and surface area
d) The object’s weight
Answer: c) The object’s shape and surface area
The force required to change the direction of an object moving in a circular path is called:
a) Centripetal force
b) Gravitational force
c) Tension force
d) Normal force
Answer: a) Centripetal force
The force that opposes the motion of two surfaces in contact with each other is called:
a) Frictional force
b) Tension force
c) Elastic force
d) Magnetic force
Answer: a) Frictional force
The force that keeps an object in orbit around a celestial body is called:
a) Centripetal force
b) Gravitational force
c) Elastic force
d) Magnetic force
Answer: a) Centripetal force
The force of static friction is greater than the force of kinetic friction when:
a) The surfaces are rough
b) The surfaces are smooth
c) The object is at rest
d) The object is in motion
Answer: c) The object is at rest
Which of the following is an example of a contact force?
a) Gravitational force
b) Magnetic force
c) Electric force
d) Applied force
Answer: d) Applied force
The force required to accelerate an object with a mass of 2 kg at a rate of 3 m/s² is :
a) 1 N
b) 2 N
c) 3 N
d) 6 N
Answer: d) 6 N
The force of gravity acting on an object is strongest on:
a) The surface of the Earth
b) High altitudes
c) Low altitudes
d) All locations equally
Answer: a) The surface of the Earth
The force exerted by an object due to its acceleration is called:
a) Gravitational force
b) Normal force
c) Applied force
d) Inertial force
Answer: d) Inertial force
The force of attraction between two masses is governed by:
a) Newton’s second law of motion
b) Newton ‘s third law of motion
c) Newton ‘s law of universal gravitation
d) Newton ‘s law of conservation of momentum
Answer: c ) Newton ‘s law of universal, gravitation
The force required to lift a 50 kg object with an acceleration of 2 m/s² is :
a) 50 N
b) 100 N
c) 150 N
d) 200 N
Answer: b) 100 N
The force exerted by a person pulling a rope is an example of:
a) Tension force
b) Frictional force
c) Gravitational force
d) Elastic force
Answer: a) Tension force
The force acting on an object submerged in a liquid depends on:
a) The object’s mass
b) The object’s volume
c) The density of the liquid
d) The object’s weight
Answer: d) The object’s weight
The force required to accelerate a 2 kg object at 4 m/s² is:
a) 0.5 N
b) 2 N
c) 4 N
d) 8 N
Answer: c) 4 N
The force of attraction between two electrically charged objects is an example of:
a) Magnetic force
b) Frictional force
c) Electric force
d) Tension force
Answer: c) Electric force
The force exerted by a person pushing a car is an example of:
a) Applied force
b) Normal force
c) Elastic force
d) Magnetic force
Answer: a) Applied force
The force required to stretch or compress a spring depends on:
a) The spring constant
b) The spring’s length
c) The spring’s mass
d) The spring’s velocity
Answer: a) The spring constant
The force of attraction or repulsion between two magnets is an example of:
a) Magnetic force
b) Elastic force
c) Tension force
d) Frictional force
Answer: a) Magnetic force
The force acting on an object in equilibrium is:
a) Zero
b) Equal to its weight
c) Always in the upward direction
d) Always in the downward direction
Answer: a) Zero