BEMB Angular kinematics

Question 1

What is a relative angle?

Answer 1

Angle at a joint formed between the longitudinal axes of adjacent body segments also known as joint angle.

Question 2

What is an absolute angle?

Answer 2

It is the angular orientation of a body segment with respect to a fixed line of segment

Question 3

What is angular displacement?

Answer 3

Change in angular position
From initial position to final position.
measured in rad, degree, rotations

Question 4

What is angular velocity

Answer 4

Rate of change in angular position

Question 5

What is angular acceleration

Answer 5

Rate of change in angular velocity

Question 6

What is the relationship between linear and angular displacement?

Answer 6

The greater the radius between a given
point on a rotating body and the axis of
rotation, the greater the linear distance
travelled by that point during an angular
motion.

Question 7

What is the relationship between linear
and angular velocity?

Answer 7

Since velocity is displacement over
time, linear and angular velocity are related by the same factor that relates displacement: the radius of rotation (r)

Question 8

What is the relationship between linear
and angular acceleration?

Answer 8

The acceleration of a
body in angular motion
can be resolved into two
perpendicular linear
acceleration
components