- A person pushing a uniformly-loaded 44.2 kg wheelbarrow of length L with pushing force P is attempting to get it over a step.The maximum horizontal force that the person can apply is Px = 201 N. What is the maximum height h of the step, expressedas a fraction n of the wheel's radius R, that the person can get the wheelbarrow over?The gravitational acceleration is g = 9.81 m/s².PLh = nRRh =R

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Answered: - A person pushing a uniformly-loaded…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A brick of mass 1.19 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.34 m. The cable will break if the tension exceeds 45.0 Newtons. What is the maximum speed the brick can have at the bottom of the circle before the cable will break?
A cylinder having a mass of 40 kg with the radius of 0.5 m is push to the right without rotation and with acceleration of 2 m/sec2. Determine the magnitude of the horizontal force P if the coefficient of friction is 0.30. * 40 kg a = 2 m/s ma 0.50 m F O P = 183 N O P = 198 N O P = 200 N O P = 232 N
A pulley (in the form of a uniform disk) with mass Mp and radius Rp is attached to the ceiling in a uniform gravitational field g and rotates with no friction about its pivot. Mass M2 is larger than mass mı, and they are connected by a massless inextensible cord. T1, T2, and Ts are magnitudes of the tensions. What is the relationship between the ten- sion T and mi g? T3 R 1. T¡ m1 9 ANS = OPTION 4 NEED SOLUTION
A 65 kg student is in a car traveling at 25 m/s on a hill of radius 110 m. When the car is at the top of the hill, what upward force does the seat exert on the student? A 4.2 m long uniform post is supported by a cable having a tension of 1 700 N. What is the mass of this post?
Physics The spool is supported on rollers A and B which rotate without friction. By exerting a force T= 350N, calculate the time to unwind 4m of cable, if it has m=600kg and ko= 1.2m (1=1/2*m*ko²). Neglect the mass of the cable being unwound and the mass of the rollers. 1 30° 1.5 m 0.8 m 0 1m- B
A truck with mass m = 1000 kg is traveling around a circular curve of radius r = 770 m when it begins to rain. The coefficients of static friction between the road and tires is μd = 0.62 when dry and μw = 0.27 when wet. Write an expression for the maximum magnitude of the force of static friction Ff acting on the truck if μs is the coefficient of friction. What is the maximum tangential speed that the truck can take the corner at without slipping when dry in m/s? What is the maximum tangential speed when wet in m/s?
A van with mass m = 1000 kg is driving around a circular curve of radius r = 950 m when it begins to rain. The coefficients of static friction between the track and tires is μd = 0.59 when dry and μw = 0.17 when wet. Write an expression for the maximum magnitude of the force of static friction Ff acting on the van if μs is the coefficient of friction. What is the maximum tangential speed that the van can take the corner at without slipping when dry in m/s? What is the maximum tangential speed when wet in m/s?
A weight is placed 13.0 cm from the center of a turntable. The turntable starts to rotate and the speed is slowly increased. The coefﬁcient of static friction between the weight and the turntable is 0.221. Eventually, the turntable is rotating fast enough so that the weight slides off. What is the speed of the weight at the moment it begins to slide?
166. A physics experiment is set up using two pulleys, a string, and a weight as shown below. The larger pulley has a radius of 20 centimeters, and the smaller pulley has a radius of 5 centimeters. The distance between the centers of the pulleys is 51 centimeters. The string is pulled tightly across both pulleys so that AB is a common tangent of the pulleys. Find the length of string from A to B to the nearest tenth of a centimeter. B weight
Problem 9: A thin cylindrical ring starts from rest at a height hj = 75 m. The ring has a radius R = 46 cm and a mass M =2 kg. R h, h,
A skate park is formed by two semicircles of radius R1 = 8.3 m and R2 = 1.0 m and a flat central part, as shown in the following figure. The flat part has a length L = 3.6 m. The semicircles are tangent to the horizontal in B and C and to the vertical in A and D. There is no friction in the curved parts and in the flat part the coefficient of kinetic friction is μC = 0.2. A block with mass m = 3.2 kg is dropped from A. Suppose the acceleration due to gravity is 9.8 m / s2. What is the magnitude of the velocity of the block as it passes through point B the second time? Choose one: a. 45,4 m/sb. None of the other alternatives.c. 22,7 m/sd. 11,6 m/se. 12,0 m/sf. 5,7 m/sg. 7,6 m/sh. 129,0 m/s

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