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A small bead of mass m is constrained to slide without friction inside a circular vertical hoop of radius r which rotates about a vertical axis at a frequency of f.
a) Find the angle where the bead will be in equilibrium--that is, where it will have no tendency to move up or down along the hoop.
b) If f = 2.00rev/s and r =22.0cm, determine what is the angle?
A boat takes 3.2 hours to travel 50 km down a river, then 4.6 hours to return. How fast is the river flowing
You are part of a search-and-rescue mission that has been called out to look for a lost explorer. You've found the missing explorer, What minimum speed must the rocket have just before impact in order to save the explorer's life
A 23 kg child goes down a straight slide inclined 38? above horizontal. The child is acted on by his weight, How large is the normal force of the slide on the child
Using the idea of a dozen as an example again, if you have 2 dozen blocks and their total mass is 48 kg, What is the mass of a single molecule
A two-stage rocket is launched at an initial angle of 83 degrees from the horizontal, and for 15.4 seconds,its engine provides a uniform acceleration in its lauch direction of 25m/s^2. Find the maximum height of the rocket
determine the internal normal force shear force and moment at points c and d of the
A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 150 N/m. what is the kinetic energy of the block
Two billiard balls undergo a glancing collision. Before the collision the first ball was traveling east at 2.6 m/s, what is the speed of the first ball after the collision
A force of 13.3 N pulls horizontally on a 0.9 kg block that slides on a rough, horizontal surface, What is the acceleration of the blocks and What is the tension in the string
Two radio waves are used in the operation of a cellular phone. To receive a call, the phone detects the wave emitted at one frequency by the transmitter station or base unit.
A skier approaches the base of an icy, frictionless hill with aspeed of 13.9 m/s. The hill slopes upwardat18.0^\circ above the horizontal.Find the acceleration of this skier:
q1. a stone has a mass of 5 x 10-4 kg and is wedged into the tread of an automobile tire as drawing shows. the
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