Question

Please answer this question

No copied from Google

1)why school bag have wide streps.

2)why a sharp knife cut better than a blund knife.

3)why the tip of a needle is sharp.

4)why the pressure on ground is more when a man walking then when he is standing.

Answer 1

1 school bag have wide streps because to reduce the pressure fell in our shoulder.
if the area is greater then we feel less pressure
2. a sharp knife cut better than blund knife because sharp knife have less area as compare to blund knife.
when area will be less the object feel more pressure.

3. the tip of niddle is sharp because it is used in steaching cloths,so niddle are sharp so that it can easily help in steaching cloths

4 this is because when we are walking we move our feet one by one and the area of one feet is less then two feets, so,the pressure on the ground is more.




if it helps mark as brailleast

Answer 2

1) the bags have wide streps to increase the surface area which reduce pressure.
2)lesser the surface area bigger the pressure or force that is why sharp knife cuts well
3)To bring all the force on a particular point if it will not sharp then the needle can't pass through easily
4)when the man or a body walks It applies force on opposite direction so when man walks he applies force on ground.....