physics test 3

Question 1

Periodic motion

Answer 1

a motion that repeats itself identically after a fixed interval of time

Question 2

examples of periodic motion

Answer 2

simple pendulum, the arms of a clock, the earth orbiting around the sun

Question 3

oscillatory motion

Answer 3

A periodic motion taking place to and from or back and forth about a fixed point

Question 4

Every oscillatory motion is periodic motion but

Answer 4

every periodic motion is not
oscillatory motion

Question 5

Harmonic oscillation

Answer 5

The oscillation can be expressed in terms of a single harmonic function, i.e., sine or
cosine function is called harmonic oscillation

Question 6

What is the relationship between spring constant K and frequency?

Answer 6

They are proportionately related

Question 7

If the angular velocity of a rotating object changes, what is it?

Answer 7

tangential acceleration

Question 8

What is the formula for inertia of a simple pendulum?

Answer 8

I = mr^2

Question 9

Newton’s First Law for Rotation

Answer 9

An object rotating about an axis tends to remain rotating about the same axis at the same rotational speed unless interfered with by some external influence

Question 10

Torque sign convention

Answer 10

counter-clockwise torque is
positive (+) and clockwise torque is negative (-)