College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- A 0.293-kg block resting on a frictionless, horizontal surface is attached to a spring having force constant 83.8 N/m as in the figure below. A horizontal force F causes the spring to stretch at a distance of 5.02 cm from its equilibrium position. www (a) Find the value of F. (Enter the magnitude of the force only.) (b) What is the total energy stored in the system when the spring is stretched? (c) Find the magnitude of the acceleration of the block immediately after the applied force is removed. m/s2 (d) Find the speed of the block when it first reaches the equilibrium position. m/sarrow_forwardA horizontal spring with force constant k = 665 N/m is attached to a wall at one end and to a block of mass m = 2.35 kg at the other end that rests on a horizontal surface. The block is released from rest from a position 4.30 cm beyond the spring's equilibrium position. (a) If the surface is frictionless, what is the speed of the block as it passes through the equilibrium position? m/s(b) If the surface is rough and the coefficient of kinetic friction between the box and the surface is ?k = 0.300, what is the speed of the block as it passes through the equilibrium position? m/sarrow_forwardA 0.1 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it. The spring has a spring constant of 380 N/m and is compressed from its equilibrium position by 6.2cm when the disk to a complete stop. As the disk gets released from the spring, what will be the speed (in m/s) of the disk when the spring is compressed by 3.8cm?arrow_forward
- The pendulum below consists of a bob of mass m in motion. During the motion, the supporting wire of length l maintains a constant angle θ with the vertical. Once it reaches the lowest point of the arc, use the conservation of energy, to determine the following: a) Velocity of the bob in terms of g, L and θ b) Tension in the supporting wire in terms of m, g, and θarrow_forwardA block of mass m is attached to a spring of spring constant k = 100 N/m. The block-spring system oscillates on a frictionless horizontal surface with a total mechanical energy of 4 J. At what positions, x, is the kinetic energy 68% of the total energy? (K = 0.68E → x = ?) x = +0.24 m O x = ±0.08 m x = ±0.16 m O x = ±0.32 m simple pendulum is oscillating with a maximum angular displacement @max. At t in moving to the leftarrow_forwardA spring is connected on one end to a wall and the other is free to be compressed. The spring constant is 25 N/cm for the spring. A 2.0 kg mass is pressed against the spring and then released and the entire system is placed on horizontal frictionless surface. (a) How much is the spring compressed when 15.0 J of energy is stored in the spring? (10.9 cm) (b) What is the acceleration when the spring is at 1/2 the maximum compression distance? (68.5 m/s2) (c) What is the maximum speed of the mass?arrow_forward
- A 25.0-kg block is released from rest at point A. The track is frictionless except for the portion between points B and C, which has a length of 10.00 m. The block travels down the track, hits a spring of force constant 2000 N/m, and compresses the spring 0.50 m from its equilibrium position before coming to rest momentarily. Determine the coefficient of kinetic friction between the block and the rough surface between points B and C.arrow_forwardA particle that can move along the x-axis is part of a system with potential energy U(x) = A x 2 − B x , where A and B are positive constants. (a) Make a sketch of U(x) vs x. (b) Where are the particle’s equilibrium positions? (You may neglect the “point” where x is very large) (c) Describe how a particle would move if given small displacements from the equilibrium positions. For each of the points you identified in Part A, identify if it is a point of stable or unstable equilibrium.arrow_forwardA mass of 4.0 kg traveling at 5.0 m/s along a smooth, horizontal plane hits a relaxed spring. The mass is slowed to zero velocity when the spring has been compressed by 0.18 m. What is the final spring force when the mass is stopped?arrow_forward
- A horizontal spring has a 2.00 kg mass attached at the end is stretched 10 cm. The mass has a maximum acceleration of 1.75 m/s2. (a) How long will it take to reach the maximum compression point? (b) What is the total mechanical energy of the spring?arrow_forwardA mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It takes 3.1 J of work to compress the spring by 0.15 m . If the spring is compressed, and the mass is released from rest, it experiences a maximum acceleration of 12 m/s2. Find the value of the spring constant. Find the value of the mass.arrow_forwardA block of mass, 1.5 kg is attached and secured to an end of a spring with a spring constant of 10,000 N/cm. The other end of the spring is secured to the wall. The block is pushed against the spring, which compresses the spring to a position of x = -0.04 cm. When uncompressed, the end of the spring that is attached to the block is at a position of x = 0.00 cm. The block/spring system is then released from rest, and the block travels along a rough horizontal track for the length of the spring. At 0.00 cm the surface changes. Can you help me calculate the block's velocity once it leaves the spring? Thank you.arrow_forward
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