Advertisements
Advertisements
प्रश्न
Sleepers are used below the rails.
Advertisements
उत्तर
Sleepers are laid below the rails to reduce pressure (force/area) on the ground.
∴ Sleepers increase the area.
APPEARS IN
संबंधित प्रश्न
An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel of 8 teeth. Where it is used.
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
To obtain a given moment of force for turning a body, the force needed can be decreased by
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle. Answer the following
1) Is there any change in the momentum of the rocket? if yes, what causes the change in momentum?
2) Is there any force acting on the rocket? if yes, how much?
State two factor on which moment of force about a point depends.
The stone of hand flour grinder is provided with a handle near its rim. Give reason.
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
State one factor on which the magnitude of a non-contact force depends. How does the magnitude of a non-contact force change along with distance?
Clockwise moment produced by a force about a fulcrum is considered to be ______.
