Explain the following :
a) 1. Dust particles are removed from a carpet by beating it.
2 .It is advantageous to run before taking a long jump.
Answers
- When a hanging carpet is beaten with a stick, the dust particles are removed from it because the carpet on beating suddenly moves forward and the dust particles due to inertia of rest continue to remain at rest. Hence the dust particles fall down and the carpet gets cleaned.
- An athlete runs before jumping to gain momentum. Because it helps in jumping higher and longer because of inertia of motion gained due to the motion. When the athletes Jump they already have a forward motion that would be greater than that of a jump made from standing in one spot.
Answer:
Answer: An athlete runs before jumping to gain momentum. Because it helps in jumping higher and longer because of inertia of motion gained due to the motion. When the athletes Jump they already have a forward motion that would be greater than that of a jump made from standing in one spot.
Explanation:
If a carpet is beaten with a stick then the carpet begins to move. But, the particles of dust are trying to resist their state of rest. The dust particles remain in a state of rest, while the carpet moves, as per Newton's first law of motion. The particles of dust thus emerge from the carpet.When the carpet is shaken or beaten by a stick, then the carpet moves back but the dust remains still due to inertia of rest and hence the dust particles get separated out.Dust particles were at rest on the carpet. However when you beat the carpet, you are forcing the dust to move along with the carpet. Due to the dust having inertia, it doesn't move, or rather, it resists motion. This is why dust comes out of a carpet when it is beaten with a stickDust particles were at rest on the carpet. However when you beat the carpet, you are forcing the dust to move along with the carpet. Due to the dust having inertia, it doesn't move, or rather, it resists motion. This is why dust comes out of a carpet when it is beaten with a stick.