Energy of Simple Harmonic Oscillators AP Physics 1 MCQ – Exam Style Questions etc.
Energy of Simple Harmonic Oscillators AP Physics 1 MCQ
Unit 7: Oscillations
Weightage : 10-15%
Exam Style Practice Questions,Energy of Simple Harmonic Oscillators AP Physics 1 MCQ
Question
A \(1.0 \mathrm{~kg}\) block is attached to an unstretched spring of spring constant \(50 \mathrm{~N} / \mathrm{m}\) and released from rest from the position shown in Figure 1 above. The block oscillates for a while and eventually stops moving \(0.20 \mathrm{~m}\) below its starting point, as shown in Figure 2. What is the change in potential energy of the block-spring-Earth system between Figure 1 and Figure 2 ?
(A) \(-1.0 \mathrm{~J}\)
(B) \(0 \mathrm{~J}\)
(C) \(1.0 \mathrm{~J}\)
(D) \(3.0 \mathrm{~J}\)
▶️Answer/Explanation
Ans:A
Question
A person holds a \(4.0 \mathrm{~kg}\) block at position A shown above on the left, in contact with an uncompressed vertical spring with a spring constant of \(500 \mathrm{~N} / \mathrm{m}\). The person gently lowers the block from rest at position A to rest at position B. Which of the following describes the change in the energy of the block-spring-Earth system as a result of the block being lowered?
(A) The energy decreases by approximately \(1.5 \mathrm{~J}\).
(B) The energy decreases by approximately \(2.5 \mathrm{~J}\).
(C) The energy increases by approximately \(4.0 \mathrm{~J}\).
(D) The energy of the system does not change.
▶️Answer/Explanation
Ans:A