BEMB kinetics concept

Question 1

Formula for force, weight, pressure, density

Answer 1

Force = Mass X Area
Weight= Mass X g(9.81)
Pressure= Force/ Area
Density= Mass / Volume

Question 2

What is inertia?

Answer 2

Tendency to resist change in state of motion.
Proportional to mass
Has no units

Question 3

What is centre of gravity?

Answer 3

The point where the body’s weight is equally balanced in all directions.
A point that serves as an index of total body motion.

Question 4

What is torque?

Answer 4

The product of the force and the perpendicular distance from the force line of action to axis of rotation.

Question 5

What is impulse?

Answer 5

Force X time

Question 6

What is compression?

Answer 6

Pressing or squeezing

Question 7

What is tensional?

Answer 7

Pulling or stretching

Question 8

What is shear force?

Answer 8

Force directed parallel to the surface

Question 9

What is stress?

Answer 9

Force / area

Question 10

What can lead to bending?

Answer 10

Compression and tension forces.

Question 11

For deformation, which part is Elastic region, yield point, ultimate failure point and plastic region

Answer 11

Refer to graph

Question 12

What is the effects of repetitive and acute loading?

Answer 12

Repetitive: Repeated application of a subacute load that is relatively of a low magnitude.

Acute: Application of a single force of sufficient magnitude to cause damage to biological tissue

Question 13

Function of EMG (Electromyography)
and
Dynamography

Answer 13

EMG: To study neuromuscular function

Dynamography: To measure ground reaction forces. Uses force and pressure platforms to measure that.