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AP Physics 1
7.4 Energy of Simple Harmonic Oscillators
7.3 Representing and Analyzing SHM
7.1 Defining Simple Harmonic Motion (SHM)
IntermediateMCQDrawing RepresentationsMathematicalConceptual15.7k
A block of mass \(m\) attached to a spring on a frictionless surface.
A block of mass \(m\) attached to a spring on a frictionless surface.
A block of mass \(m\) is attached to an ideal horizontal spring of spring constant \(k\). The opposite end of the spring is attached to a rigid wall, and the block oscillates on a frictionless horizontal floor. The equilibrium position of the block is at \(x = 0\), and the positive \(x\)-direction is to the right. At time \(t = 0\), the block is released from rest at position \(x = +A\) and oscillates with a period \(T\).

OptionDirection of Velocity at \(t = \dfrac{3}{4}T\)Direction of Acceleration at \(t = \dfrac{3}{4}T\)Kinetic Energy at \(t = \dfrac{3}{4}T\)
(A)In the \(+x\)-directionZeroMaximum
(B)In the \(+x\)-directionIn the \(+x\)-directionMaximum
(C)In the \(-x\)-directionZeroMaximum
(D)In the \(-x\)-directionIn the \(-x\)-directionZero

Which row in the table correctly identifies the direction of the block's velocity, the direction of its acceleration, and its kinetic energy at time \(t = \dfrac{3}{4}T\)?

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