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प्रश्न
A tall building has wide foundations.
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उत्तर
Foundation of buildings are kept wide so that the weight of the building may act on a larger area. As a result, it will exert less pressure on the ground. This avoids sinking of building into the earth.
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संबंधित प्रश्न
Moment of force = force × perpendicular distance of force – from the pivoted point.
State the S.I. unit of moment of force.
What do you mean by the clockwise and anti-clockwise moment of force?
Write the expression for calculating the moment of force about a given an axis.
A uniform metre scale can be balanced at the 70.0 cm mark when a mark when a mass 0.05 kg is hung from the 94.0 cm mark
- draw a diagram of the arrangement
- Find the mass of the metre scale
Classify the following amongst contact and non-contact forces.
Frictional force
Give an example for each of the following uses of a machine:
to change the point of application of force
What is meant by the term ‘moment of force’? If the moment of force is assigned a negative sign then will the turning tendency of the force be clockwise or anti-clockwise?
State the effects that a force can produce. Given one example of each.
A uniform metre rule rests horizontally on a knife-edge at the 60 cm mark when a mass of 10 gram is suspended from one end. At which end must this mass be suspended? What is the mass of the rule?
