Rotational Inertia & Work
find the torque when the inertia is 56 kgm^2 angular acceleration is 67.96 rad/s
3805.76 Nm
A bowling ball that has a mass of 43 kg and a radius of 11 cm rolls without slipping down a lane at 152 m/s. With how much total kinetic energy does the ball hit the pins?
6.95x105 J
What is the angular momentum of a 0.25 kg mass rotating on the end of a piece of rope in a circle of radius 0.75m at an angular speed of 12.5 rad/s?
l=1.76 KGM^2/S
Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 8.8e+6 microseconds, what will be his final velocity and how far will he fall?
A) V=-86.24
B) y=-379.5m
there are peaks in a wave at 1 minute then at 5 minutes and 3 seconds, what is the frequency in milliehertz
0.004115226 Hz
4.115226 mHz
An airplane propeller has a moment of inertia of 576 kgm2, Find the rotational work done on the propeller if your torque is equivalent to 3215.23 Nm, time is around 4.12s, then has an acceleration of 92.1 rad/s
2.51x106 J
What is the final velocity of a hoop that rolls without slipping down a 67.00-m-high hill, starting from rest?
25.62 m/s
A bowling ball has a mass of 5.5 kg and a radius of 12.0 cm. It is released so that it rolls down the alley at a rate of 12 rev/s. Find the magnitude of its angular momentum.
2.39 kgm^2/s
A ball is launched at an angle of 49 above the horizontal with an initial velocity of 741.3 m/s. At what time is its vertical velocity 0m/s?
t=57.1s (basically a minute)
A spring with a spring constant of 3700Nm is compressed 5.43 fm. How much potential energy has been generated?
5.45x10-26 J
A pulley in the shape of a uniform disk with a radius of 0.67 m has a string draped over the top as seen in the figure. If the rotational inertia of the pulley is 37.4 kgm 2 , find the angular acceleration of the pulley.
-1.558 rad/s^2
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. If the linear velocity of the ball relative to the elbow joint is 68.0 m/s at a distance of 0.476 m from the joint and the moment of inertia of the forearm is 0.612 kg⋅m2, what is the rotational kinetic energy of the forearm?
6244.9 J (which is Absolutly insane and i don't think is possible and i need to to start using realistic numbers)
A disk has a mass of 3.5 kg and radius of 15 cm is rotating with an angular speed of 15 rev/s when a second non-rotating disk of 5.0 kg, mounted on the same shaft is dropped onto it. If the second disk has a diameter of 18 cm and a mass of 5.0 kg, what is the common final angular speed of the system?
9.9
A soccer ball is kicked horizontally off a 22.0-meter high hill and lands a distance of 35.0 meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball
16.5 m/s
A spring with a spring constant of 80.0 N/m has a 1.5-kg block attached to its free end. If the block is pulled out 50.0 cm from its rest position and released, what is its speed when it returns to the equilibrium position? Assume there is no friction.
3.7 m/s
A rotating toy top (rotational inertia = 0.046 kgm^2) is rotating at an angular velocity of 124 rad/s while encountering a friction torque of −0.41 Nm. For how much time will it be rotating?
t = 13.92s
A typical small rescue helicopter, similar to the one in Figure 5, has four blades, each is 4.00 m long and has a mass of 50.0 kg. The blades can be approximated as thin rods that rotate about one end of an axis perpendicular to their length. The helicopter has a total loaded mass of 1000 kg.
(a) Calculate the rotational kinetic energy in the blades when they rotate at 300 rpm.
(b) To what height could the helicopter be raised if all of the rotational kinetic energy could be used to lift it?
(a) 5.26 x 10^5 J
(b) 53.7m
DOUBLE POINT: is water wet
IT IS NOT FIGHT ME
Suppose that a golf ball is struck such that it travels at a speed of 50ms at an angle 30o to the horizontal. Neglecting air resistance, how long will the golf ball remain in the air before it touches the ground again?
5.1s
A 500-g puck is connected to the side of an air table by a spring. A force of 1.4 N is applied to pull the puck 8.0 cm to the right. Then, the puck is released. a) What is the maximum acceleration of the puck?
b) What is the acceleration of the puck as it passes its original rest position?
a) -2.8 m/s2
b) 0 m/s2
Wests mom has 4 kids, East, North, and Douglas what's the name of the 4th kid
West
What is 3/7 chicken, 2/3 cat, and 2/4 goat?
Chicago
what is the zip code of the empire state building
10118
Fredric Baur, the inventor of the Pringles can is buried in what?
a pringles can, girl i'm astonished too
cola, cherry, licorice, amaretto, almond, vanilla, blackberry, apricot, blackberry, caramel, pepper, anise, sarsaparilla, ginger, molasses, lemon, plum, orange, nutmeg, cardamon, all spice, coriander juniper, birch and prickly ash. these are the ingredients/flavor of what drink
Dr. Pepper