- 1(current)
Q. No.1. \(5\)
2. \(0\)
3. \(7\)
4. \(9\)
The extension in the spring, in equilibrium, is:
| 1. | \(1~\text{cm}\) | 2. | \(2~\text{cm}\) |
| 3. | \(0.5~\text{cm}\) | 4. | \(\sqrt2~\text{cm}\) |
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A block of mass \(15~\text{kg}\) is suspended using two spring balances of negligible mass, as shown in the figure. Which of the following statements is correct?
| 1. | Both scales will read \(15~\text{kg}.\) |
| 2. | Both scales will read \(10~\text{kg}.\) |
| 3. | The upper scale will read \(15~\text{kg}\) and the lower one zero. |
| 4. | The lower scale will read \(15~\text{kg}\) and the upper one zero. |
The masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12 m/sec2. What is the acceleration of 20 kg mass?
(1) 12 m/sec2
(2) 4 m/sec2
(3) 10 m/sec2
(4) Zero
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The masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12 m/sec2. What is the acceleration of 20 kg mass?
1. 12 m/sec2
2. 4 m/sec2
3. 10 m/sec2
4. Zero
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1. \(30\) N/m
2. \(294\) N/m
3. \(600\) N/m
4. \(5880\) N/m
| 1. | \(\dfrac{mg}{k}\) | 2. | \(\dfrac{mg}{2k}\) |
| 3. | \(\dfrac{2mg}{k}\) | 4. | \(\dfrac{3mg}{2k}\) |
A spring of force constant k is cut into lengths of ratio 1:2:3. They are connected in series and the new force constant is . If they are connected in parallel and force constant is is
(1) 1:6
(2) 1:9
(3) 1:11
(4) 6:11
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- 1(current)
Q. No.
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