Free Potential Energy MCQs with Answers
52 Potential Energy MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Potential energy is energy stored because of position or configuration, including gravitational potential energy near Earth's surface and elastic energy in a stretched or compressed spring. Questions use changes in potential energy and conservation of mechanical energy, while distinguishing a chosen reference level from an absolute zero of energy.
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52 questions · page 3 of 3
- A. 316 J
- B. 216 J
- C. 392 J
- D. 416 J
Explanation: Bpth GPE and KE have to be calculated.(m x g x h)+(0.5 x m x v^2) = 216J
Correct answer: 216 J- A. 7.2 J
- B. 3.6J
- C. 120 J
- D. 1200 J
Explanation: B is correct.Data:Mass of 2 m chain = 4kgMass of 0.6m chain = 1.2 kgForce = Mass x Accelaration due to gravityF= 1.2 x 10F= 12NWork =…
Correct answer: 3.6J- A. 100J
- B. 1.875J
- C. 18.75J
- D. 187.5J
Explanation: To find the work done to raise the bird's own center of mass to the branch, we need to use the formula: Work = force x distance x…
Correct answer: 100J44. A cubic vessel of height 1 m is full of water. The minimum work done in taking the water out is:
- A. 5000 J
- B. 10000 J
- C. 5 J
- D. 10 J
Explanation: Total water volume = 1m × 1m × 1m = 1m3 mass = 1m3 × 1000 kgm-3 = 1000 kg .
Correct answer: 5000 J- A. P.E. = 300 J and K.E. = 180 J
- B. P.E. = 180 J and K.E. = 300 J
- C. P.E. = 230 J and K.E. = 250 J
- D. P.E. = 250 J and K.E. = 230 J
Explanation: Explanation:At point A, P.E = 480 JSince, P.E = mgh 480 = 6 × 10 × h h = 480 / 60 h = 8m above groundAt B, having fallen 3m, height above…
Correct answer: P.E. = 300 J and K.E. = 180 J- A. 5 m/s
- B. 10 m/s
- C. 15 m/s
- D. 20 m/s
Explanation: Given: Distance = S = 5m Acceleration = a = g = 10ms-2 Initial velocity = Vi = 0 ms-1 Final velocity = Vf = ?
Correct answer: 10 m/s- A. 0.15 J
- B. 4.3 J
- C. 4.4 J
- D. 4.6 J
Explanation: Potential Energy Gain:The fish gains potential energy due to its change in height.
Correct answer: 4.6 J- A. Gravitational forces and elastic forces
- B. Frictional force and propulsion of a motor
- C. electric force and tensioning string
- D. propulsion force of rocket and air resistence
Explanation: There are conservative and non-conservative forces. A conservative force is not path dependent, such as gravity and electrostatic forces.
Correct answer: Gravitational forces and elastic forces- A. All of these
- B. Zero
- C. Positive
- D. Negative
Explanation: The work done by the spring force can be positive, negative, or zero depending on the direction of motion and position of the particle.
Correct answer: All of these- A. E/2
- B. 2E
- C. E
- D. E/4
Explanation: EA = ½ kAxA2 Keeping force constant and using F= kx As kA = 2kB Then 2xA=xB Energy stored in B will be: EB= ½ (kA/2) (2xA)2 EB= ½ (2xA2…
Correct answer: 2E- A. 3:4
- B. 4:3
- C. 1:1
- D. None
Explanation: Factual. Gravitational potential for an equipotential surface (one that is at same height) is same for all masses. Hence ratio will be 1:1
Correct answer: 1:1- A. 98 J
- B. 49J
- C. 490 J
- D. 980 J
Explanation: The potential energy (PE) stored in an object is calculated as:PE = m × g × hwhere:m = mass of the object (10 kg)g = acceleration due to…
Correct answer: 490 J