A simple pendulum of length 0.8 m has a period of 1.5 s on an unknown planet. What is the gravitational acceleration on that planet?
Correct answer: C. 14.05 m/s²
- A. 9.8 m/s²
- B. 12.0 m/s²
- C. 14.05 m/s²
- D. 16.0 m/s2
Explanation
Using T = 2π √L/g , we get g = 4π2L / T2 = 4π2 (0.8) / (1.5)2 ≈ 14.05 m/s2 .
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Simple Harmonic Motion questions
A mass-spring system (m = 0.25 kg, k = 100 N/m) is set into SHM with amplitude 0.1 m. What is the speed when the displacement is half the amplitude?
Two identical springs (k = 150 N/m) are connected in series, and a 0.6 kg mass is attached. What is the period of oscillation?
A particle executes SHM with amplitude 0.15 m. When its displacement is 0.05 m, its speed is 0.6 m/s. What is the angular frequency?
A block of mass 0.4 kg is attached to a spring (k = 160 N/m). It is displaced 0.06 m and released. What is the maximum acceleration?
A particle in SHM has displacement x(t) = 0.05cos(4πt + π/6) (meters). What is the period of the motion?
A spring is stretched by 0.04 m with a force of 8 N. What is the spring constant?