1Is the measure of the turning effect of a rigid body. zit is operationally defined as the produc of a perpendicular force and the length of its lever arm from the pivot or axis of rotation.
Torque
2Is a measure of a distance from the force applied to the pivot.
Lever arm
3True or False: When lever arm is longer, the more Torque can be extended.
True
4If the force causing the rotation is clockwise, Torque is ???
Negative Torque
5If the force causing rotation is counterclockwise rotation, then Torque is ???
positive
6What law motion states that unless hindered by an external force, a rigid body rotating about a fixed axis will remain rotating at the samebrste within the same axis.
Newton's 1st law firm motion
7Also known as the rotational inertia, is defined as the quantity that resists changes in an object's rotational state of motion.
Moment of Inertia
9True of False: The heavier the object, the harder it is to rotate/stop to rotate. The longer the radius, the heavier it is to rotate/stop to rotate.
True
10True or False: If the summation of forces and Torques in a system is equal to one, then we can say that complete equilibrium is attained.
False
11Is the motion of a body about an internal axis.
Rotational motion
12The axis of the motion outside the object, we call it orbit.
Circular motion
13The axis of the motion inside the moving object.
Rotary Motion
14Is defined as the time rate of angular displacement.
Angular Velocity
15Is the angle about the axis of rotation through which the object turns.
Angular Displacement
16The uniform rate of change in Velocity is known as angular acceleration.
Angular Acceleration
17True or False: The angular acceleration, a, is directly proportional to the Torque, T, but inversely proportional to the rotational Inertia, I.
True
18In linear motion, a body moving at certain Velocity has a momentum, p, equal to the product of its mass and Velocity.
Angular momentum
19Is a principle in physics that states that te total angular Moment of a system remains constant unless acted upon by an external Torque.
Law of conversion of angular momentum
20This law extends gravity beyond earth.
Newton's law of universal gravitation
21Value of G(universal gravitation constant) ?
6.67x10-¹¹Nm²/kg²
22Is a constant of proportionality equal to the force of attraction between two objects of masses 1 kg each and are separated by a distance of 1 m.
Universal gravitational constant
23Value of the mass of earth?
5.97x10²⁴kg
24Is the gravitational force per unit mass.
Gravitational field
25Gravitational field strength of the earth is??
9.8 N/kg which is equivalent to 9.8 m/s²
26U=Gmem
Gravitational potential energy
27Perigee
362, 570, 000 m
29In the early 1600s, He proposed three laws of planetary motion.
Johannes Kepler
30Sometimes referred to as the law of ellipses or law of ??? — explains that plamets are orbiting the sun in a path described as an ellipse.
Kepler's first law, law of orbits
31
Sometimes referred to as the law of equal areas — describes the speed at which any given planet will move while orbiting the sun.
Kepler's second law
32Sometimes referred to as the law of harmonies or law of ??— compares the orbital period and radius of orbit of a planet to those of other planets.
Kepler's third law, law of periods
34Is an oscillatory motion experienced by an object displaced by a force from an equilibrium position.
Simple harmonic motion
35The maximum displacement attained by the body on either side of the equilibrium is its ??
amplitude
36The total number of vibrations per unit time is called
frequency
37The time for one complete vibration is called
period of motion
38consists of a bon of relatively large mass hanging on a string with negligible mass.
simple pendulum
39refers to an object which oscillates back and forth, in contrast to the rather idealized simple pendulum where all the mass is concentrated in a single point.
physical pendulum
40When a disk is displayed I'm such a way that there is a restoring torque, we have a ???
torsion balance
41Is the repeated to and from the movement of a system from its equilibrium position.
Oscillatory motion
42If this system is displaced a little from its fixed point, a force acts on the system which tries to bring back back system to its fixed point. This force if the ??? and it gives rise to oscillation or vibrations.
Restoring force
43Is the decrease in amplitude of an oscillation as a result of energy being drained from the system to overcome frictional or ther resistive forces.
Damping
44Are those oscillatory motions where their amplitude remains the same or constant.
Undamped oscillations
45Are those oscillatory motion where it's amplitude decreases with time until it achieves the state of equilibrium.
Damped oscillationz
46In which the dmaoing of an oscillator causes it to return to equilibrium with the amplitude gradually decreasing to zero
Underdamped condition
47In which the dmaoing of an oscillator causes it to return as quickly as possible to its equilibrium position without oscillating back and forth about this position.
critically damped condition
48In which damping of a oscillator causes it to return to equal without oscillating
over-damped condition
49Is a disturbance in a medium that carries energy without particles being moved.
wave
50are defined as waves that needed any type of medium for propagation.
Mechanical wave
51Is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. It's is always characterized by particle motion being parallel to wave motion.
Longitudinal wave
52Is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.
Transverse wave
53Is an oscillation, such as a sound wave or alternating current, whose waveform is that of a sine curve.
sine wave
54The distance sound travels during one periodm regardless of frequency.
Wavelength
55The speed àt which a wave is moving moving traveling.
Wave speed
56Is also known as propagation number or angular wavenumber. it is defined as the number of wavelengths per unit distance.
wavemunber
57A point light source will spread its energy equally in all directions.
Inverse square law