Cracking the SAT Physics Subject Test

If the disk rotates as a rigid body, then all three dots shown have the same angular displacement, ∆θ. In fact, this is the defi ...

Math Brush Up: Partial Circumference You can derive this equation from the one for taking the length of an arc. Circumference of ...

Here’s How to Crack It One complete revolution is equal to an angular displacement of 2π radians, so the body’s average angular ...

KEPLER’S LAWS Many motions in the real world are not exactly circular, one of the most important examples being planetary orbits ...

Kepler’s Second Law As a planet moves in its orbit, a line drawn from the sun to the planet sweeps out equal areas in equal time ...

Therefore, the planet moves faster when it is nearer the sun than when it is farther away. Kepler’s Third Law If T is the period ...

Chapter 7 Comprehensive Drill See Chapter 17 for solutions. An object of mass 0.5 kg, moving in a circular path of radius 0.25 ...

(D) 4 N·m (E) 10 N·m In the figure above, what is the torque about the pendulum’s suspension point produced by the weight of th ...

A uniform meter stick of mass 1 kg is hanging from a thread attached at the stick’s midpoint. One block of mass m = 3 kg hangs ...

The two rods on the arms of the U each have mass m; the third rod has mass 2m. How far below the midpoint of the horizontal rod ...

(E) A satellite is currently orbiting Earth in a circular orbit of radius R; its kinetic energy is K 1. If the satellite is mov ...

The mean distance from Saturn to the sun is 9 times greater than the mean distance from Earth to the sun. How long is a Saturn ...

Keywords uniform circular motion centripetal acceleration centripetal force center of mass translation rotation rotational inert ...

Summary Uniform circular motion considers an object’s circular path at a constant speed. The velocity is not constant because th ...

the value of the missing variable. Kepler’s first law: Every planet moves in an elliptical orbit with the sun at one focus of bo ...

Chapter 8 Oscillations In this chapter, we’ll concentrate on a kind of periodic motion that’s straightforward and that, fortunat ...

SIMPLE HARMONIC MOTION The diagrams below show a block attached to the left side of a wall. When the connecting spring is neithe ...

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A 12 cm-long spring has a force constant (k) of 400 N/m. How much force is required to stretch the spring to a length of 14 cm? ...

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