Question

Please answer the question in the picture.​

Answer 1

❍ Given Info :- In operating a water pump a resistance of 480 N is overcome by an effort of 72 N. If the distance of fulcrum from the point where the resistance acts is 0.2 m.

❍ To Find :- The distance from the fulcrum, where the effort is applied and also calculate the mechanical advantage.

☯ Solution :-

• ★ Load = 480 N
• ★ Effort = 72 N
• ★ Load Arm = 0.2 m

1. ☯ Effort Arm = ?
2. ☯ Mechanical Advantage = ?

1) Finding Effort Arm ,

❒ As we know that,

• ★ Load × Load Arm = Effort × Effort Arm

❍ Then,

➙ Effort Arm = Load × Load Arm / Effort

➙ Effort Arm = 480 N × 0.2 m / 72 N

➙ Effort Arm = 4 / 3 m = 1.33 m.

☯ Therefore, Effort Arm (The distance from the fulcrum, where the effort is applied) = 1.33 m.

2) Finding Mechanical Advantage ,

❒ As we know that,

• ★ Mechanical Advantage = Load / Effort

❍ Then,

➙ Mechanical Advantage = 480 N / 72 N = 6.67

☯ Therefore, Mechanical Advantage = 6.67.

Hence,

• Effort Arm = 1.33 m
• Mechanical Advantage = 6.67.

★ Hope it helps u ★