मराठी

'When a Hanging Carpet is Beaten with a Stick, the Dust Particles Start Coming Out of It'. this Phenomenon Can Be Best Explained by Making Use of : - Science

Advertisements
Advertisements

प्रश्न

'When a hanging carpet is beaten with a stick, the dust particles start coming out of it'. This phenomenon can be best explained by making use of :

पर्याय

  • Newton's third law of motion

  • Newton's law of gravitation

  • Newton's first law of motion

  • Newton's second law of motion

MCQ
Advertisements

उत्तर

Newton’s first law of motion    
This is because beating the carpet with a stick  makes the carpet move to-and-fro quickly, but the dust particles tend to remain at rest due to their inertia and get separated from the carpet.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Force and Laws of Motion - Very Short Answers 1 [पृष्ठ ५७]

APPEARS IN

लखमीर सिंह Physics (Science) [English] Class 9 ICSE
पाठ 2 Force and Laws of Motion
Very Short Answers 1 | Q 45 | पृष्ठ ५७

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Give the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed.


The driver of a three-wheeler moving with a speed of 36 km/h sees a child standing in the middle of the road and brings his vehicle to rest in 4.0 s just in time to save the child. What is the average retarding force on the vehicle? The mass of the three-wheeler is 400 kg and the mass of the driver is 65 kg.


Neglect the effect of rotation of the earth. Suppose the earth suddenly stops attracting objects placed near its surface. A person standing on the surface of the earth will.


A reference frame attached to the earth
(a) is an inertial frame by definition
(b) cannot be an inertial frame because the earth is revolving around the sun
(c) is an inertial frame because Newton's laws are applicable in this frame
(d) cannot be an inertial frame because the earth is rotating about its axis.


A block of mass 2 kg placed on a long frictionless horizontal table is pulled horizontally by a constant force F. It is found to move 10 m in the first seconds. Find the magnitude of F.


A block of 2 kg is suspended from a ceiling by a massless spring of spring constant k = 100 N/m. What is the elongation of the spring? If another 1 kg is added to the block, what would be the further elongation?


When a train starts, the head of a standing passenger seems to be pushed backward. Analyse the situation from the ground frame. Does it really go backward? Coming back to the train frame, how do you explain the backward movement of the head on the basis of Newton's laws?


What do you mean by inertia of rest?


A mass of 2 kg is suspended with thread AB (Figure). Thread CD of the same type is attached to the other end of 2 kg mass. Lower thread is pulled gradually, harder and harder in the downward directon so as to apply force on AB. Which of the threads will break and why?


Two blocks A and B of masses m and 2 m, respectively, are held at rest such that the spring is in natural length. Find out the accelerations of both the blocks just after release.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×