Two masses m₁ = 14 kg and m₂ = 15 kg are connected by a light inextensible string passing over a frictionless pulley. Find (a) acceleration of the system when released from rest, (b) the tension in the string, and (c) the speed of either mass after moving a distance of 2.0 m.
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Two masses m₁ = 14 kg and m₂ = 15 kg are connected by a light inextensible string passing over a frictionless pulley. Find (a) acceleration of the system when released from rest, (b) the tension in the string, and (c) the speed of either mass after moving a distance of 2.0 m.
** Please show a diagram or a simple illustration for this problem as well if possible. Thank you.
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- If the motor exerts a constant force of 300 N on the cable, determine the speed of the 19-kg crate when it travels s = 10 m up the plane, starting from rest. The coefficient of kinetic friction between the crate and the plane is μk = 0.3.(Figure 1)Express your answer to three significant figures and include the appropriate units.The spring in the figure has a spring constant of 1400 N/m. It is compressed 17.0 cm, then launches a 200 g block. The horizontal surface is frictionless, but the block's coefficient of kinetic friction on the incline is 0.180. (Figure 1) Figure 200 g **** 2.0 m 45° 1 of 1 Part A What distance d does the block sail through the air? Express your answer with the appropriate units. ► View Available Hint(s) HÅ d= Value Submit < Return to Assignment Units Provide Feedback Pearson ? ReviewA block swings on a string after being released from rest. When the string becomes vertical it breaks, allowing the block to slide on the horizontal surface until it comes to a stop. Neglect air resistance. analyze the problem by giving possible equations that could be used to solve this problem and hypothetical situations that this problem can be derived from.
- A block of mass m;=2.5 kg is released from rest in a smooth (frictionless) hemispherical bowl of radius R-0.5 m from a height R with respect to the bottom of the bowl, as shown in the figure. Determine the speed of the block when it reaches the bottom of the bowl. Express your answer in m/s. m1Problem 3: Amass is sliding on a frictionless surface with a speed v. It runs into a linear spring with a spring constant of k, which compresses from position x; to position xp. m ©theexpertta.com Write a general expression for the force that the spring exerts on the mass, in term of k and x. Choose the initial position of the front of the spring to be x=0. Fspring =-kx / Correct! Part (b) Select the equation that correctly describes the work done by the spring to stop the mass. Ow=-kx? OW=- *fk x dx + , m v OW=-kx dx Ow= f *f k x dx OW= - *k x dx - , m v? OW = - * F x dx Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. Part (c) Evaluate the relationship in part (b) to arrive at an expression for the work done in terms of known variables. Part (d) Solve for the numerical value of the work done in Joules given that x; = 0, x = 68 cm, and k= 145 N/m. W = - 33.5 W = -33.5 / Correct!Review I Constants I P A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N. Part A If the car is moving at 26 m/s, what is the shortest distance in which the car can stop safely? Express your answer to two significant figures and Include the approprlate units. HA Az = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Provide Feedback FEB 13 J O stvN
- An object of mass mm is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and the surface, μk, is small enough that the object will slide down the slope if given a very small push to get it started. a.) Find an expression for the object's speed at the bottom of the slope. Express your answer in terms of the variables m, μk, L, h, and appropriate constants.The pulley system shown in the figure is used to lift a m= 67-kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Determine the tension in the upper chain. Determine the tension in the lower chain.com/course.html?courseld-17255520&OpenVellumHMAC=197f22d4a42226c194d42c759b32e18a#10001 Part A What is the speed of the potato at the lowest point of its motion? A 0.280 kg potato is tied to a string with length 1.50 m, and the other end of the string is tied to a rigid support. The potato is held straight out horizontally from the point of support, with the string pulled taut, and is then released. Express your answer in meters per second. [VD ΑΣΦ 49 a x Xb b √x x x x 1X1 V = m/s Submit Previous Answers Request Answer X Incorrect; Try Again Part B What is the tension in the string at this point? Express your answer in newtons. T = 8.23 N P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions Contact 12,772 APR ⠀⠀⠀ 28 A tv A O DII F8 2 M #3 E 80 F3 $ 4 000 000 F4 R % 5 F5 T A 6 F6 Y & 7 ◄◄ F7 U * 00 8 9 DD F9 0 ? X.10n X S ) 0 79 F10 P
- Sam, whose mass is 71 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 240 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of fuel after only 15 s. ▼ Part A What is Sam's top speed? Express your answer with the appropriate units. V = 36 Submit Part B m S S = Previous Answers Correct How far has Sam traveled when he finally coasts to a stop? Express your answer with the appropriate units. HÅ Value m Submit Previous Answers Request Answer ?A conical pendulum has length I and the angle made by the string with vertical is 0 = 20° . The mass of the object is m=179 g. If the speed of the object is v=3.6m/s find the length of the string. Take g=10m/s2. Round your answer to one decimal place. mStarting from rest, a 91-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 740 N, and his speed at the bottom of the pole is 3.4 m/s. How far did he slide down the pole? Number i Units ho