Force, Motion & Gravity MCQs with Answers

What does the theory of relativity state about motion, space, and time?

• A.Motion is absolute and space and time are independent of each other
• B.Motion is always relative and space and time exist in relation to each other
• C.Motion is relative but space and time are fixed and unchanging
• D.Motion and time are absolute while space is relative

What is the SI unit of Torque (Moment)?

• A.Joule (J)
• B.Newton-meter (Nm)
• C.Watt (W)
• D.Pascal (Pa)

A force of 15N is applied at a distance of 0.4 meters from a pivot. The torque would be ?

• A.37.5 Nm
• B.3.75 Nm
• C.15.4 Nm
• D.6 Nm

A body is in neutral equilibrium when its center of gravity _?

• A.Rises
• B.Falls
• C.Remains at same height
• D.First rises then falls

Which law explains the relationship between force, mass, and acceleration (Force = Mass × Acceleration)?

• A.Newton's First Law
• B.Newton's Second Law
• C.Newton's Third Law
• D.Law of Conservation of Momentum

Direction of angular velocity can be found by?

• A.Left-hand rule
• B.Fleming's rule
• C.Right-hand rule
• D.Maxwell's rule

The sky divers use parachutes to easily descend towards the earth because it:

• A.Increases weight of the diver
• B.Decreases gravitational pull
• C.Increases air resistance
• D.Reduces atmospheric pressure

The mass and diameter of a planet are twice those of earth. The period of oscillation of a pendulum on that planet will be (if it is a second's pendulum on earth)?

• A.√2 seconds
• B.2√2 seconds
• C.4 seconds
• D.1/√2 seconds

An object moving along a circular path is?

• A.In equilibrium
• B.Not in equilibrium
• C.In static equilibrium
• D.In neutral equilibrium

The cross product of two parallel vectors is _?

• A.Zero
• B.One
• C.Maximum
• D.Equal to the product of their magnitudes