Calculating the net torque using Newton's second law and rotational motion about a fixed axis.

The blades of a ceiling fan have a total movement of inertia of 0.16kg x m^2 and an angular acceleration of 7.0rad/s^2. What net torque is being applied to the blades?

Harmonic motion : Calculating period, frequency and angular frequency

The fan blades of a jet engine make one thousand revolutions in a time of 50.0 ms. Determine (a) The period in seconds and (b) The frequency in Hz of the rotational motion (c) What is the angular frequency of the blade?

center of gravity

A lunch tray is being held in one hand. The mass of the tray itself is .200 kg, and its center of gravity is located at its geometrical center. on the tray is a 1.00 kg plate of food and a .250kg cup of coffee. obtain the force T exerted by the thumb and force F exerted by the four fingers. Both forces act perpendicular to the tray, which is being held parallel to the ground. distance's end left side tray to thumb .0600m Force T down "" fingers 0.100m Force F up "" to center of plate o.240m '' to center of cup .380m '' to rt side tray .400m

Using relativity to determine time in different frames of reference.

A rocket moves toward a mirror at 0.800c relative to the reference frame S. The mirror is stationary relative to S. A light pulse emitted by the rocket travels toward the mirror and is reflected back to the rocket. The front of the rocket is 1.8E12 m from the mirror (as measured from S) at the moment the light pulse leaves the rocket. What is the total travel time of the pulse as measured by observers in a) the S frame. b) the front of the rocket.

Working with linear superposition.

The sound produced by the loudspeaker has a frequency of 12 000 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM, which has a fixed length. Simultaneously, the sound travels through the right tube LYM, the length of which can be changed by moving the slide selection. At M, the sound waves coming from the two paths interfere. As the length of the path LYM is changed, 0.the sound loudness detected by the microphone changes. When the sliding section is pulled out by 0.020 m, the loudness changes from the maximum. Find the speed at which sound travels through the gas in the tube.