Class One Levers

Levers are used in every day actions, particularly in sport. In this report, we demonstrate the usage of a class one lever and determine some statistics.

Distance along Lever of Fulcrum

Distance Force was dropped

Trial 1

Trial 2

Trial 3

Average

20cm

30 cm

34

40

32

35.3

20cm

50 cm

65

52

60

59

15cm

30 cm

63

59

57

59.7

15cm

50 cm

56

66

70

67

Questions

The principle of a lever is to produce more force with minimal force from the user. For example, a small effort to move a large load. This can be seen in Catapults flinging a substantial amount of weight with minimal force required (Class Notes 2010)

The class of lever that was used in this Lab was a Class 1 Lever, where the Fulcrum is located between the applied Force and Resistance. The longer the force arm, the more production of force is made, therefore, making the resistance more affected depending on the amount of force applied. This is how we got the Resistance to move when we dropped the block on the force arm.

When the length of the resistance arm changes, there is an obvious change in the movement of the Resistance after force was applied to the Force Arm. The shorter the resistance arm, the less the Resistance would move. The longer the resistance arm and longer the force arm, more force was applied to move the resistance and therefore, it would move further. This is because, with a longer resistance arm the resistance was able to reach a higher peak height before leaving the arm hence there was more momentum behind it to accelerate the movement of the resistance. However, with a shorter arm, there was less momentum and smaller radial arc, hence it not reaching as high a peak height.

When the force applied is increased, we can conclude that the resistance will move a greater distance than if less force is applied. As we can see in each trial, when the distance force was dropped at a shorter distance the resistance would not move as far as it would when dropped at a longer distance. However there were a few odd distances, where some of the Higher dropped distances resulted in a shorter movement by the resistance. Despite these results, the averages show that a higher dropped force would result in a higher resistance movement.

Levers in Badminton can be found in the wrist up to the Racquet. The Racquet acts as the arm, the Shuttle as the Resistance and your Wrist as the force applied and the Racquet Handle as the Fulcrum.
When serving in badminton, the Racquet head connects with the force applied from your wrist flicking. By hitting the force in a different area of the Racquet (The further the end of the Racquet, the longer the resistance arm hence more force is applied to the initial resistance. 

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