Advertisements
Advertisements
प्रश्न
A tall building has wide foundations.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread
A half metre rod is pivoted at the centre with two weights of 20gf and 12gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.
1) Which of the two forces acting on the rigid rod causes clockwise moment?
2) Is the rod in equilibrium?
3) The direction of 20 kgf force is reversed. What is the magnitude of the resultant moment of the forces on the rod?
Moment of force = force × perpendicular distance of force – from the pivoted point.
How does the effect of force differ when it is applied on a non-rigid body?
What are non-contact forces? Give two example
Calculate the acceleration produced in a body of mass 50 g when acted upon by a force of 20 N.
A car of mass 600 kg is moving with a speed of 10 ms-1 while a scooter of mass 80 kg us moving with a speed of 50 ms-1. Compare their momentum.
The moment of a force of 10 N about a fixed point O is 5 N m. Calculate the distance of the point O from the line of action of the force.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
What moment of force depresses the rule?
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
