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ICSE Class 10 Physics Question 18 of 27

Solved 2024 Specimen Paper ICSE Class 10 Physics — Question 7

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Question 6(i)

Sumit and Sachin went for a trek and during the journey they visited a cottage. They suspended their bags to the two ropes hanging from P and Q on a wheel capable of rotating around O. Sumit suspended his bag to the rope Q and Sachin suspended his bag from the rope P. The wheel remained in equilibrium.

Sumit and Sachin went for a trek and during the journey they visited a cottage. They suspended their bags to the two ropes hanging from P and Q on a wheel capable of rotating around O. Sumit suspended his bag to the rope Q and Sachin suspended his bag from the rope P. The wheel remained in equilibrium. State with a reason who is carrying a heavier bag. ICSE 2024 Specimen Physics Solved Question Paper.

(a) State with a reason who is carrying a heavier bag.

(b) Based on the principle of moments, write a mathematical relation that can be used to determine the weight (W) of Sachin's bag, given that the weight of Sumit's bag is 18 kgf.

Answer

(a) At equilibrium clockwise moment = anticlockwise moment

Moment = force x perpendicular distance

Wt. of Sachin's bag x OP = Wt. of Sumit's bag x OR

As OR < OP. Hence, Wt. of Sumit's bag > Wt. of Sachin's bag.

Hence, Sumit's bag is heavier than Sachin's bag

(b) Given,

Wt. of Sumit's bag = 18 kgf

Let wt. of Sumit's bag be W

At equilibrium,

Clockwise moment = Anticlockwise moment

W x OP = 18 x OR

W = 18×OROP\dfrac{18 \times \text{OR}}{\text{OP}}