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What do you mean by inertia of rest? - Physics

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प्रश्न

What do you mean by inertia of rest?

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उत्तर

When a body is at rest , it will continue to remain at rest unless some external force is applied to change its state of rest. This property of body is called inertia of rest.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Laws of Motion - Exercise 3 [पृष्ठ १२८]

APPEARS IN

फ्रँक Physics [English] Class 9 ICSE
पाठ 3 Laws of Motion
Exercise 3 | Q 11 | पृष्ठ १२८

संबंधित प्रश्‍न

The figure shows a light spring balance connected to two blocks of mass 20 kg each. The graduations in the balance measure the tension in the spring. (a) What is the reading of the balance? (b) Will the reading change if the balance is heavy, say 2.0 kg? (c) What will happen if the spring is light but the blocks have unequal masses?


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How does Newton's second law of motion differ from the first law of motion?


Derive the relation between newton and dyne.


What do you mean by inertia of motion?


A body of mass 10 kg is acted upon by two perpendicular forces, 6 N and 8 N. The resultant acceleration of the body is ______.

  1. 1 m s–2 at an angle of tan−1 `(4/3)` w.r.t 6 N force.
  2. 0.2 m s–2 at an angle of tan−1 `(4/3)` w.r.t 6 N force.
  3. 1 m s–2 at an angle of tan−1 `(3/4)` w.r.t 8 N force.
  4. 0.2 m s–2 at an angle of tan−1 `(3/4)` w.r.t 8 N force.

The masses of 10 kg and 20 kg, respectively, are connected by massless spring as shown in the figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration of 12 m/s2. What is the acceleration of 20 kg mass?

(g = 10 m/s2)

 


This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.

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Statement 2: The cart does not move because the force described in statement 1 cancel each other.


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