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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

How does the effect of force differ when it is applied on a rigid body?

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प्रश्न

How does the effect of force differ when it is applied on a rigid body?

थोडक्यात उत्तर
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उत्तर

When a force applied on a rigid object it does not change the interspacing of constituent molecules and does not change dimensions and can cause motion in it.

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पाठ 3: Force and Pressure - Short/Long Answer Questions [पृष्ठ ५६]

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एस.एस. शोम Concise Physics [English] Class 8 ICSE
पाठ 3 Force and Pressure
Short/Long Answer Questions | Q 3.1 | पृष्ठ ५६

संबंधित प्रश्‍न

A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.


Is moment of force a scalar or a vector?


The diagram shows two forces F1 = 5 N and F2 = 3N acting at point A and B of a rod pivoted at a point O, such that OA = 2m and OB = 4m

Calculate:

  1. Moment of force F1 about O
  2. Moment of force F2 about O
  3. Total moment of the two forces about O.

The diagram in the figure shows a uniform metre rule weighing 100 gf, pivoted as its centre O. two weight 150 gf and  250 gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm . Calculate

the total anticlockwise moment about o.


What is the work done when no net force is applied on the body?


Name the physical quantity whose unit is kgf. Define it.

(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.


The diagram shows a uniform metre rule weighing 100gf, pivoted at its centre O. Two weights 150gf and 250gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm. Calculate :

the total clockwise moment about O


Write the expression for calculating the moment of force about a given point.


A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.

  1. If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
  2. Give a reason for your answer in (a).

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