Recent content by holmeskaei

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    Torque with a pulley of radius R and mass M

    Homework Statement Blocks of mass m_1 and m_2 are connected by a massless string that passes over the pulley in the figure (Intro 1 figure) . The pulley turns on frictionless bearings, and mass m_1 slides on a horizontal, frictionless surface. Mass m_2 is released while the blocks are at...
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    Work and Kinetic Energy Theorem

    Homework Statement A 4.5 kg box slides down a 5.1m high frictionless hill, starting from rest, across a 2.4m wide horizontal surface, then hits a horizontal spring with spring constant 540 N/m. The other end of the spring is anchored against a wall. The ground under the spring is...
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    Pendulum of length l with mass m at end swings over a peg

    Homework Statement A pendulum is formed from a small ball of mass m on a string of length L. As the figure shows, a peg is height h \,=\:L/3 above the pendulum's lowest point. From what minimum angle theta must the pendulum be released in order for the ball to go over the top of the...
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    Conservation of Momentum and/or Energy

    Homework Statement You have been asked to design a “ballistic spring system” to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. The block, with the embedded bullet, then slides across a frictionless table and collides with a horizontal spring whose spring...
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    Amusement park ride gravitation problem

    Homework Statement In an old-fashioned amusement park ride, passengers stand inside a 5.4-m-diameter hollow steel cylinder with their backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing suddenly drops away! If all...
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    Solving Tension in Chain Homework

    I know that Fr=Tcos(theta) Fz=n-Fg=0 So the T=Fr/cos(theta) But I don't have an angle. I have a radius, and I have a mass, and I can find a velocity using the 1 revolution=4.0 seconds. I am not sure how to go about this.
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    Solving Tension in Chain Homework

    Homework Statement You have a new job designing rides for an amusement park. In one ride, the rider's chair is attached by a 9.0-m-long chain to the top of a tall rotating tower. The tower spins the chair and rider around at the rate of 1 rev every 4.0 s. In your design, you've assumed that...
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    How Does Physics Explain Forces on The Roundup Amusement Park Ride?

    Homework Statement In an amusement park ride called The Roundup, passengers stand inside a 16.0 m-diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane. Part A: Suppose the ring rotates once every 4.10 s. If a rider's mass is 54.0 kg, with...
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