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  1. AP Physics C Mechanics
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How do you find velocity from position in SHM?

Take the first derivative of the position function with respect to time: v(t)=dx(t)dt=−Aωsin⁡(ωt+ϕ)v(t) = \frac{dx(t)}{dt} = -A\omega \sin(\omega t + \phi)v(t)=dtdx(t)​=−Aωsin(ωt+ϕ).

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How do you find velocity from position in SHM?

Take the first derivative of the position function with respect to time: v(t)=dx(t)dt=−Aωsin⁡(ωt+ϕ)v(t) = \frac{dx(t)}{dt} = -A\omega \sin(\omega t + \phi)v(t)=dtdx(t)​=−Aωsin(ωt+ϕ).

How do you find acceleration from velocity in SHM?

Take the first derivative of the velocity function with respect to time: a(t)=dv(t)dt=−Aω2cos⁡(ωt+ϕ)a(t) = \frac{dv(t)}{dt} = -A\omega^2 \cos(\omega t + \phi)a(t)=dtdv(t)​=−Aω2cos(ωt+ϕ).

How to calculate the period (T) of a mass-spring system?

Use the formula: T=2πmkT = 2\pi \sqrt{\frac{m}{k}}T=2πkm​​, where m is the mass and k is the spring constant.

How to calculate the period (T) of a simple pendulum?

Use the formula: T=2πLgT = 2\pi \sqrt{\frac{L}{g}}T=2πgL​​, where L is the length of the pendulum and g is the acceleration due to gravity.

How to calculate the total mechanical energy in SHM?

Sum the kinetic and potential energies: ME=K+UME = K + UME=K+U, where K=12mv2K = \frac{1}{2}mv^2K=21​mv2 and U=12kx2U = \frac{1}{2}kx^2U=21​kx2 (for a spring) or U=mghU = mghU=mgh (for gravity).

Compare and contrast the period of a mass-spring system and a simple pendulum.

Mass-Spring: T=2πmkT = 2\pi \sqrt{\frac{m}{k}}T=2πkm​​ (depends on mass and spring constant). Pendulum: T=2πLgT = 2\pi \sqrt{\frac{L}{g}}T=2πgL​​ (depends on length and gravity).

Compare kinetic and potential energy in SHM.

Kinetic: Max at equilibrium, zero at max displacement. Potential: Zero at equilibrium, max at max displacement. Total energy is conserved.

What is Simple Harmonic Motion (SHM)?

Periodic motion where the restoring force is proportional to the displacement from equilibrium.

Define 'restoring force' in SHM.

The force that always directs toward the equilibrium position and is proportional to the displacement (F=−kxF = -kxF=−kx).

What is 'amplitude' (A) in the context of SHM?

The maximum displacement of the object from its equilibrium position.

Define 'angular frequency' (ω\omegaω) in SHM.

A measure of how rapidly the oscillations occur, related to the period (T) by ω=2πT\omega = \frac{2\pi}{T}ω=T2π​.

What is the 'period' (T) of SHM?

The time it takes for one complete cycle of the motion.

Define 'phase angle' (ϕ\phiϕ) in SHM.

It represents the initial position of the oscillating object at time t=0.