College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A slingshot, which can be modeled as a spring with spring constant k = 56.4 N/m, is stretched by 16 cm with respect to its equilibrium position and used to shoot a rock with mass 0.15 kg straight up into the air. Find the speed of the rock (in m/s) when it reaches a height which is 75% of its maximum height (relative to the position at which it was shot from). Use g = 9.81 m/s2. Hint: First find the maximum height, and then find the speed when the height is 75% of that
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- A bowling ball is attached to a 3.56-meter long cable and hung from the ceiling. The cable is kept taut and the ball is raised to an initial height of 1.66 meters above the classroom floor. It is released from rest and allowed to swing as a pendulum. Determine its speed (in m/s) when it is at a height of 1.12 meters above the floor. Answer: m/s (round to the nearest hundredth)arrow_forwardA roller coaster cart of mass m = 241 kg starts stationary at point A, where h1 = 39.4 m and a while later is at B, where h2 = 10 m. The acceleration of gravity is 9.8 m/s 2 .What is the speed of the cart at B, ignoring the effect of friction? Answer in units of m/s.arrow_forward
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