MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The elastic potential energy varies linearly with displacement. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What is the increase in potential energy storage when the compression distance is doubled in a spring obeying Hooke’s law? |
| A. | No increase |
| B. | 100% increase |
| C. | Cannot be determined |
| D. | 4 times |
| Answer» E. | |
| 3. |
A spring of length 1m has two cars connected to both of its ends. The two cars move towards eachother such that the spring is compressed to 0.5m. If the spring constant is 500 N/m, what is the elastic potential energy stored? |
| A. | 125 J |
| B. | -125 J |
| C. | 62.5 J |
| D. | -62.5 J |
| Answer» D. -62.5 J | |
| 4. |
Assume a spring extend by “d” due to some load. Let “F” be the spring force and “k’ the spring constant. Then, the potential energy stored is _____ |
| A. | 2d/F2 |
| B. | F2/2k |
| C. | 2k/T2 |
| D. | F2/2d |
| Answer» C. 2k/T2 | |
| 5. |
Find the energy equation for the system shown in the figure. “m” is the mass of the block moving at a velocity “v”, “k” is the spring constant, “q” is the coefficient of friction of the floor and let “d” be the compression in the spring. |
| A. | 1/2*m*v2+ = 1/2*k*d2 + q*m*g*d |
| B. | 1/2*m*v2+ + 1/2*k*d2 + q*m*g*d = 0 |
| C. | -1/2*m*v2+ = 1/2*k*d2 + q*m*g*d |
| D. | 1/2*m*v2+ – 1/2*k*d2 + q*m*g*d = 0 |
| Answer» B. 1/2*m*v2+ + 1/2*k*d2 + q*m*g*d = 0 | |
| 6. |
The following graph represents theparabolic plots of the potential energy V andkinetic energy K ofa block attached to aspring obeying Hooke’s law. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
How much should a spring of indefinite length be compressed to have a potential energy equivalent to a ball of mass 6 kg raised to a height of 120 m above the ground? Let the spring have a stiffness of k = 100 N/m and assume g = 10 m/s2. |
| A. | 6m |
| B. | 12m |
| C. | 20m |
| D. | 144m |
| Answer» C. 20m | |
| 8. |
An object is travelling at a velocity of 10 m/s. It has a mass of 2 kg. It impacts a spring of spring constant “k” as shown in the figure. What is the compression of the spring? |
| A. | 10 x (2/k) 0.5 |
| B. | 10 x (200/k) 0.5 |
| C. | (200/k) |
| D. | (200/k) 2 |
| Answer» B. 10 x (200/k) 0.5 | |
| 9. |
The potential energy possessed by a spring is also known as _____ |
| A. | Elastic potential energy |
| B. | Extensive potential energy |
| C. | Compressive potential energy |
| D. | Deflection potential energy |
| Answer» B. Extensive potential energy | |