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When a boy weighing 20 kgf sits at one e...

When a boy weighing 20 kgf sits at one end of a 4m long see saw, if gets depressed at this end. How can it be brought to the horizontal position by a man weighing 40 kgf.

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To solve the problem of balancing the seesaw, we can follow these steps: ### Step 1: Understand the Problem We have a seesaw that is 4 meters long, with a boy weighing 20 kgf sitting at one end. We need to find out where a man weighing 40 kgf should sit to bring the seesaw back to a horizontal position. ### Step 2: Identify the Moments The moment (or torque) is calculated as the product of the force and the distance from the pivot point (fulcrum). ...
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ICSE-FORCE -EXERCISE 1(A) Numericals
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  2. A nut is opened by a wrench of length 10cm. IF the least force require...

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  3. A wheel of diameter 2m is shown in Fig 1.28 with axle at O. At force F...

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  4. The diagram in Fig.1.29 shows two forces F1=5N and F2=3N acting at poi...

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  5. The forces each of magnitude 10N act vertically upwards and downwards ...

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  6. Fig.1.31 shows two forces each of magnitude 10N acting at points A and...

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  7. A steering wheel of diameter 0.5m is rotated anticlockwise by applying...

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  8. A uniform metre rule is pivoted as its mid point. A weight of 50gf is ...

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  9. A uniform metre rule between horizontally on a knife edge placed at th...

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  10. The diagram below (Fig.1.32) shows a uniform bar supported at the midd...

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  11. Fig.1.33 shows a uniform metre rule placed on a fulcrum at its mid poi...

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  12. When a boy weighing 20 kgf sits at one end of a 4m long see saw, if ge...

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  13. A physical balance has its arms of length 60cm and 40cm. What weight k...

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  14. The diagram in Fig.1.34 shows a uniform metre rule weighing 100gf, piv...

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  15. A uniform metre rule of weight 10gf is pivoted at its 0 mark. (i) Wh...

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  16. A uniform half metre rule can be balanced at the 29.0cm mark when a ma...

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  17. A uniform metre rule of mass 100g is balanced on a fulcrum at mark 40c...

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  18. In Fig.1.35 a uniform bar of length l m is supported at its ends and l...

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