College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- Chapter 15, Problem 025 GO In the figure, a block weighing 16.1 N, which can slide without friction on an incline at angle e = 50.0°, is connected to the top of the incline by a massless spring of unstretched length 0.550 m and spring constant 140 N/m. The block is initially at its equilibrium position. (a) How far from the top of the incline is the block's equilibrium point? (b) If the block is pulled slightly down the incline and released, what is the period of the resulting oscillations? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Workarrow_forwardThe figure below shows 6 different situations in which a box is released from rest at the top of a frictionless inclined plane. The masses and initial heights of the box are given in the figure. I kg 10 kg A 10 m 2 m 5 m I m 10 kg I kg B 5m 5 m I m 0.5 m 15 kg 5 kg C F 7.5 m 10 m 0.75 m 5 m In which situation will the box have the least kinetic energy at the bottom of the incline? O Situation A O Situation B O Situation C O Situation D O Situation E O Situation Farrow_forwardNot understanding letter Darrow_forward
- A device called an Atwood's Machine is built by attaching two masses to a string and hanging that string over a pulley (see diagram). The mass of m1=640 kg, initially at rest, is released at a height h=2.60m above the table. A) Determine the speed of m2= 3.00 kg mass just as the 6.40-kg mass hits the table. B) Find the maximum height above the table to which the 3.00-kg mass rises.arrow_forwardAn online video daredevil is filming a scene where he swings across a river on a vine. The safety crew must use a vine with enough strength so that it doesn't break while swinging. The daredevil's mass is 90.0 kg, the vine is 12.0 m long, and the speed of the daredevil at the bottom of the swing has been determined to be 7.00 m/s. What is the minimum tension force (in N) the vine must be able to support without breaking? ?Narrow_forwardAn object of mass m= 7.6 kg is free to move on a horizontal surface without any friction. It is initially at rest and starts moving under a net force of F =(3N)î +(4N)ĵ . What is the object's speed in m/s after moving 1 meter?arrow_forward
- OA: 3 m/s B. 4 m/s OC. 5 m/s 60 N 50 kg A 50 kg cart is at rest when a 60 N force is applied, moving the cart 8 m until it hits an uncompressed spring. It then travels for another 2 m under the action of the force. The mass's velocity after moving 10 m is most nearly OD, 6 m/s 10 m 2 m llll k = 100 N/marrow_forwardYou attach a 2.10 kg weight to a horizontal spring that is fixed at one end. You pull the weight until the spring is stretched by 0.300 m and release it from rest. Assume the weight slides on a horizontal surface with negligible friction. The weight reaches a speed of zero again 0.100 s after release (for the first time after release). What is the maximum speed of the weight (in m/s)? m/s Need Help? Read It Submit Answerarrow_forwardThe 78.5-kg swimmer in the figure starts a race with an initial velocity of 1.4 m/s and exerts an average force of 78.5 N backward with his arms during each 1.80 m long stroke. What is the subsequent average resistance force, in newtons, from the water during 5.25s it takes him to reach his top velocity of 2.55 m/s?arrow_forward
- Two objects (m1 = 4.70 kg and m2 = 2.85 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.70-kg object is released from rest at a point h = 4.00 m above the table. answer all of the follwing parts (a) Determine the speed of each object when the two pass each other. m/s(b) Determine the speed of each object at the moment the 4.70-kg object hits the table. m/s(c) How much higher does the 2.85-kg object travel after the 4.70-kg object hits the table?arrow_forwardAtt = 0, force F-=(6.30i +6.10j +3.50k)N begins to act on a 2.90 kg particle with an initial speed of 3.60 m/s. What is the particle's speed when its displacement from the initial point is d = (1.60î + 2.80j + 7.80k) m ?arrow_forwardEscaping from a tomb raid gone wrong, Lara Croft (m = 60.0 kg) swings across an alligator-ingested river from a 9.45-m-long vine. If her speed at the bottom of the swing is 5.30 m/s and she makes it safely across the river, what is the minimum breaking strength of the vine?arrow_forward
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