# in the figure, the ball a is released from rest when the spring is at its natural length. for the block b, of mass m to leave contact with the ground at some stage, the minimum mass of a must be

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get in the figure, the ball a is released from rest when the spring is at its natural length. for the block b, of mass m to leave contact with the ground at some stage, the minimum mass of a must be from screen.

## In the figure ball A is released from rest, when the spring is at its natural length. For the block B of mass M to leave contact with the ground at some stage, the minimum mass of A must be

In the figure ball A is released from rest, when the spring is at its natural length. For the block B of mass M to leave contact with the ground at some stage, the minimum mass of A must be

Byju's Answer Standard XII Physics Work Done: Spring In the figure... Question

In the figure ball A is released from rest, when the spring is at its natural length. For the block B of mass M to leave contact with the ground at some stage, the minimum mass of A must be

A 2 M B M C M 2 D

A function of M and force constant of spring

Open in App Solution

The correct option is **D**

M 2 For B

Just to loose contact

M g = K x ⇒ x = M g K Applying WET W E e + W D s = Δ K E ⇒ − 1 2 K x 2 + m g x = 0 ⇒ m = M 2 Suggest Corrections 5 SIMILAR QUESTIONS

**Q.**In figure, block A is released from rest, when spring is at its natural unstretched length. For block B of mass M to leave contact with the ground at some stage, the minimum mass of A must be

**Q.**

**Q.**A block of mass

5 kg

is released from rest when compression in spring is

2 m

. Block is not attached with the spring of spring constant

k

, natural length of the spring is

4 m

. The maximum height of the block from the ground is:

( g = 10 m/s 2 )

**Q.**In the figure block

A

is released from rest when the spring is in its natural length. For the block

B

of mass m to leave contact with the ground at some stage what should be the minimum mass of block

A ?

**Q.**The system shown in figure is released from rest with mass

2 k g

in contact with the ground. Pulley and spring are massless, and friction is absent everywhere. The speed of

5 k g block when 2 k g

block leaves the contact with the ground is (force constant of spring

k = 40 N / m and g = 10 m / s 2

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## In the figure, a ball A is released from rest when the spring is at its natural (unstrached) length. For the block B , of mass M to leave contact with the ground at some stage, find the minimum mass of A .

Click here👆to get an answer to your question ✍️ In the figure, a ball A is released from rest when the spring is at its natural (unstrached) length. For the block B , of mass M to leave contact with the ground at some stage, find the minimum mass of A .

Question

## In the figure, a ball A is released from rest when the spring is at its natural (unstrached) length. For the block B, of mass M to leave contact with the ground at some stage, find the minimum mass of A.

**A**

## 2M

**B**

## M

**C**

## M/2

**D**

## A function of M and the force constant of the spring

Hard Open in App

Updated on : 2022-09-05

Solution Verified by Toppr

Correct option is C)

Mass of A is m

If mass A move to a distance x, then spring will stretch to x value. And it will lift the mass of B

Force in the spring, F=kx=Mg ...... (1)

Kinetic energy = Potential energy

2 1 kx 2 =mgx kx=2mg...... (2) From (1) and (2) Mg=2mg m= 2 M

Required mass of A is

2 M , to lift mass B

Solve any question of Oscillations with:-

Patterns of problems

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## In the figure, block A is released from rest when the spring is its natural length for the block B of mass m to leave contact with the ground at some stage what should be the minimum mass of block A? .

The spring will exert maximum force when the ball is at its lowest position. If the ball has descended through a distance x to reach the position, mgx=(1//2)Kx^2 or x=2mg//K (i) For the block B to leave contact spring force, Kx=Mg (ii) Comparing Eqs. (i) and (ii), m=M//2

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In the figure, block A is rele...

In the figure, block A is released from rest when the spring is its natural length for the block B of mass m to leave contact with the ground at some stage what should be the minimum mass of block A?

.

Updated On: 27-06-2022

( 00 : 30 ) ADVERTISEMENT Text Solution Open Answer in App A (a) `2M` B (b) `M` C (c) `M//2` D (d) `M//4` Answer

The correct Answer is C

Solution

The spring will exert maximum force when the ball is at its lowest position. If the ball has descended through a distance x to reach the position,

`mgx=(1//2)Kx^2` or `x=2mg//K` (i)

For the block B to leave contact spring force,

`Kx=Mg` (ii)

Comparing Eqs. (i) and (ii), `m=M//2`

Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

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Guys, does anyone know the answer?