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1) The fair has a ride that consists of a large vertical cylinder that spins about its axis fast enough that any person inside is held up against the wall when the floor drops away. The coefficient of static friction between the person and the wall is and the radius of the cylinder is R. Determine the period of revolution necessary to keep the person from falling.
Consider the normal force between the person and wall.
2) A "spring activated toy" weighs 0.925N and has a spring of length 5cm. Upon release the toy jumps to a height of 0.5m. What is the spring constant of the spring?
The spring is initially held in a compressed state by the adhesive force of the 'sucker' which provides a maximum force of the form
Fsucker = Fo(1 - t2/to2o)
where F0 and t0 are constants. Find an expression for the time it would take before the spring-activated toy is launched into the air.
3) One strategy used by the Ewok's during their battle with the imperial stormtroopers was to throw a rock at a high angle over level ground. While a stormtrooper watched the first one, a second rock was thrown at a low angle timed to arrive before or at the same time as the first one. Assume both rocks are thrown with a speed of 25.0 m/s. The first one is thrown at an angle of 65.0° with respect to the horizontal. At what angle should the second (low angle) rock be thrown to arrive at the same point as the first? How many seconds later should the second rock be thrown, after the first was thrown, to arrive at the same time?
The radius of curvature of the curved side of a Plano-convex lens made of glass (n = 1.64) is 25 centimeter. Evaluate what is the focal length of the lens
while in a third floor office building you notice a ball moving straight upward just outside the window. it takes 0.17
a diffraction grating that has 2000 slits per centimeter is used to analyze the spectrum of mercury.a find the angular
A 28.0 kg block is connected to an empty 2.00 kg bucket by a cord over a frictionless pulley, Calculate the mass of the sand added to the bucket.
Two people are standing on a 2.5 m longplatform, one at each end. The platform floats parallel to theground on a cushion of air, like a hovercraft. One person throws a6.6 kg ball to the other, who catches it.
Calculate the fluid force (in Newtons) on a square plate with aside of 2 m that is submerged at ahorizontal angle of 30°. Assumethat the top edge of the plate is located at the surface of the water.
A record turntable rotating at 33(1/3)rev/min slows down and stops in 21 s after the motor is turned off. How many revolutions does it make in this time
an amplifier supplies 5.0 watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. What were Nate\'s speeds immediately before and after the collision
An individual is nearsighted; his near point is 13.0 cm and his far point is 43.0 cm. What lens power is needed to correct his nearsightedness? When the lenses are in use, what is this person's near point?
A 250g , 49.0 cm diameter turntable rotates on frictionless bearings at 60.0 rpm. What is the turntable's rotation angular velocity when the block reaches the outer edge
Two long, coaxial cylindrical shell conductors carry equal and opposite charges. The inner shell has radius "a" and charge +q, and the outer shell had radius "b" and charge -q. Find the potential difference between the shells
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