Statics and Dynamics Quiz

What is the condition for a rigid body to be in equilibrium?

• Sum of all external forces must be maximum

• Rigid body must be in motion

• Torque must be applied to the rigid body

• Sum of all external forces and torques must be zero

According to Newton's first law of motion, an object at rest will remain at rest unless acted upon by what?

• gravity

• friction

• external force

• internal force

What is the SI unit of force?

• meter (m)

• newton (N)

• kilogram (kg)

• joule (J)

What is the formula to calculate torque?

• torque = mass x acceleration

• torque = force x distance

• torque = speed x distance

• torque = work / time

According to Newton's second law of motion, what is the relationship between force, mass, and acceleration?

• Force is directly proportional to mass and acceleration

• Force is directly proportional to mass but inversely proportional to acceleration

• Force is directly proportional to acceleration but inversely proportional to mass

• Force is inversely proportional to mass and acceleration

What is the difference between static friction and kinetic friction?

• Static friction occurs when an object is at rest, while kinetic friction occurs when the object is in motion.

• Static friction occurs when an object is in motion, while kinetic friction occurs when the object is at rest.

• Static friction and kinetic friction are the same thing.

• Static friction only occurs on rough surfaces, while kinetic friction occurs on smooth surfaces.

What is the net force acting on an object in equilibrium?

• Negative

• 10

• Zero

• Undefined

What is the principle of moments?

• Sum of the clockwise moments is greater than sum of the anticlockwise moments

• Sum of the clockwise moments equals zero

• Sum of the clockwise moments equals sum of the anticlockwise moments

• Sum of the anticlockwise moments equals zero

According to Newton's third law of motion, for every action, there is an equal and opposite what?

• acceleration

• force

• reaction

• velocity

What is the difference between statics and dynamics?

• The difference is that statics deals with sound, while dynamics deals with light.

• Statics deals with living organisms, while dynamics deals with non-living objects.

• The difference is that statics deals with objects at rest, while dynamics deals with objects in motion.

• Statics is related to computer programming, while dynamics is related to mechanical engineering.