angular motion

Question 1

what is angular motion

Answer 1

refers to rotation= a movement around a fixed point
can involve the whole body or just a leg or arm

Question 2

when does angular motion occur

Answer 2

when a force is applied outside the centre of mass

Question 3

what is an off centre force

Answer 3

eccentric force

Question 4

what is moment of force (torque)

Answer 4

turning force
causes an object to turn about its axis

Question 5

what is moment of force (torque) dependant on

Answer 5

• greater the size of the force the greater the torque
• application of the same force further away from the axis willl increase the torquw

Question 6

how is moment of force/torque calculated

Answer 6

moment of force/torque (Nm)= force (N) X perpendicular distance from the fulcrum (M)

moment of force can either be an effort or resistance arm
resistance arm= shortest perpendicular distance from resistance and fulcrum
effort arm= shortest perpendicular distance form effort and fulcrum

Question 7

how to calculate resistance arms

Answer 7

moment of force/ torque= force (N) x perpendicular distance from the fulcrum (M)

Question 8

how to calculate effort arms

Answer 8

moment of force/torque= force (N) x perpendicular distance from the fulcrum (M)