Question

Hello !
Please Help ! Question on turning effect of Force

Answer 1

Answer:

No

Explanation:

Answer 2

Answer:

• The magnitude of the force P acting on the system is

Step-by-step Explanation:

Given:

• The beam is balanced [ Net torque is Zero ]
• A force of 8.1 N acts on the beam at the distance of 2 cm downward
• A force of 5.2 N acts on the beam at the distance of 6 cm downward
• A force of P acts on the beam at the distance of 2 cm upward

To Find:

• The magnitude of the force P

Formula Used:

• Magnitude of Torque = RFSin∅

We know that:

• The Net torque is equal to 0 so, the upward torque is balanced by the downward torque

Calculating the downward torque₁ :

• Torque₁ = RFSin∅
• Torque₁ = 2/100 × 8.1 × Sin(90)
• Torque₁ = 0.02 × 8.1 × 1
• Torque₁ = 0.162 Nm

Calculating the downward torque₂ :

• Torque₂ = RFSin∅
• Torque₂ = 6/100 × 5.2 × Sin(90)
• Torque₂ = 0.06 × 5.2 × 1
• Torque₂ = 0.312 Nm

Calculating total downward torque :

• Total downward torque = Torque₁ + Torque₂
• Total downward torque = 0.612 + 0.312
• Total downward torque = 0.924 Nm

Henceforth:

• The total downward torque is 0.924Nm which is equal to the upward torque

Calculating the force P acting upwards :

• Torque₃ = RFSin∅
• 0.924 = 2/100 × P × Sin(90)
• 0.924 = 0.02 × P × 1
• P = 0.924/0.02
• P = 46.2 N  

Therefore:

• The magnitude of the force P is 46.2 N

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