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A semicircular section of roller coaster track (Radius=34m) is designed to be able to provide up to 140kN (1.4x10^5N) of support (upward normal force) for coasters without collapsing. (a) Draw a FBD for a coaster at the bottom of this semicircular track. Assume friction and air resistance are negligble, and that the car is traveling at a constant speed. (b) If an overloaded coaster with total mass of 4700 kg reaches the bottom of this curved section of track at a constant speed of 28 m/s, will the track collapse?
Suppose that a block of mass m = 9.0 kg moving with speed V is behind a block of mass M = 27 kg and speed of 0.5 m/s, How much kinetic energy of the blocks is lost due to the collision
A solid disk of mass M and radius R is pivoted so that it can rotate about its center. The disk is initially at rest. A ball of mass m and speed v travels along a path tangential to the rim of the disk.
A 10 kg box is being pushed up a slippery ramp at and angle of 10 degrees. What force does the man need to apply to the box to keep it traveling up the ramp at a steady speed
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
A marble moving 1.48 m/s rolls off the top edge of a 125. cm high table. How far from the base of the table did it strike the floor
A novice skier, starting from rest, slides down a frictionless 35° incline whose vertical height is 118 m. Explain how fast is she going when she reaches the bottom? Illustrate what was the initial speed of the arrow?
What is the pressure (in kPa) exerted by an object that has a base which is 2cm by 4cm nd a weight of 45N.
a circus performer hangs a 3.0kg hoop of diameter 1.0m over a nail. with what frequency does it oscillate about the nail
A proton in a tin nucleus is known to lie with in a sphere whoes diameter is about 1.2x10^-14m. what is the uncertainty in the momentum of the proton
Each of the following objects has a radius of 0.174 m and a mass of 2.79 kg, and each rotates about an axis through its center, Find the magnitude of the angular momentum of each object
At t = 0, a 14.0 V battery is connected to a 1200 ? resistor in series with a 6.30 ?H inductor. What is the current after one time constant
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. The frequency of the sound does npt change when the sound enters the water. The wavelength of the sound is 2.49 m in the air, and the temperature of bot..
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