OCT414 Topic 4 - Biomechanic Principles II
Quiz
•
Physics
•
University
•
Easy
Imanina Yazit
Used 7+ times
FREE Resource
55 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is torque?
The tendency of a force to rotate an object
The resistance to motion between two surfaces
The rate of change of velocity
The force that opposes the motion of an object
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the force arm in a lever system?
The perpendicular distance between the location of force application and the axis of rotation
The distance between the axis and the point of resistance application
The shortest distance from the axis of rotation to the line of action of the force
The greater the distance of the force arm, the more torque produced by the force
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mechanical advantage of a wheel and axle?
Radius of wheel / Radius of axle
Radius of axle / Radius of wheel
Force arm / Moment arm
Moment arm / Force arm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of a pulley?
To change the direction of force
To increase the amount of force applied
To decrease the amount of mechanical energy needed
All of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the law of inertia?
A body in motion tends to remain in motion at the same speed in a straight line unless acted on by a force
A change in acceleration is directly proportional to the force causing it and inversely proportional to the mass of the body
For every action, there is an opposite and equal reaction
The resistance to motion between two surfaces
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between static friction and kinetic friction?
Static friction occurs between two objects that have not yet begun to move, while kinetic friction occurs between two objects that are sliding upon one another
Static friction is always greater than kinetic friction
Static friction depends on the hardness and roughness of the surface textures
All of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is rolling friction?
Resistance to an object rolling across a surface
Resistance to motion between two surfaces
The rate of change of velocity
The force that opposes the motion of an object
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