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Types of Forces III (Elastic Force and Tension)
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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 4.4 | Types of Forces III (Elastic Force and Tension) |
Types of Forces III (Elastic Force and Tension) Revision Questions
1. An object is hooked on a spring of constant 4000 N/m. As a result, the spring extends by 8cm. What is the mass of the object? (For simplicity, take the gravitational field strength equal to 10 N/kg).
- 320 kg
- 32 kg
- 5 kg
- 500 kg
Correct Answer: B
2. An object is pulled horizontally due right by using a rope while it is hooked at a spring on the left as shown in the figure.
The spring has a constant of 10000 N/m and it is tied to a fixed vertical wall. If the friction between the object and the ground is negligible, calculate the tension in the rope if the spring extends by 4 cm due to the action of the pulling force.
- 40 N
- 25 N
- 400 N
- 250 N
Correct Answer: C
3. The elastic force vs deformation graph of a spring is shown in the figure below.
What is the maximum weight the spring can hold without compromising its elastic behaviour?
- 80 N
- 1280 N
- 2140 N
- 560 N
Correct Answer: D
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