Advertisements
Advertisements
Question
A tall building has wide foundations.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
The S.I. unit of force is kgf. (kilogram-force)
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
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.
A body X of mass 5 kg is moving with velocity 20 m s-2 while another body Y of mass 20 kg is moving with velocity 5 m S-1. Compare the momentum of the two bodies.
State two factor on which moment of force about a point depends.
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
Give any two effects of a force on a non-rigid body.
State when the moment of force is positive and when it is negative.
A couple of 15 N force acts on a rigid body, such that arm of couple is 85 cm. Calculate moment of couple in the SI system.
