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- Problems: 210, 211, 216, 218, 231, 233, 238, 242, 257, 264 I. In the figure below, the x-component of the force P is 140 lb to the left. Determine P and its y- component. P 7 ww YA push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an angle 0 below the horizontal, and the box remains a rest. The box rests on a horizontal surface that has some friction with the box. The normal force on the box due to the floor is equal to: O W + P cos 0. O W + P sin 0. OW-P sin 0. O W + P. O W. W 0 Pa bridge across a small stream is made by supporting a 10m long log with a mass of 75kg with ropes tied at the ends of the log to the tree on the banks. the rope on the right makes a 25 degree angle with the ground. the rope on the left makes a 20 degree angle with the ground. a 25kg child us standing 7.5 m from the left bank. write the net force equation for the y direction. write the net force equation for the x direction. write the torque equation (use the left end of the log as the axis of rotation).
- C A Force Of Constant Magnitude X Bb Chapter 8 - 202120:22987 C x Ner 7.2 HW - PHYS 1301 Spr x = 7.5 Nonconservative Forces - Col x A webassign.net/web/Student/Assignment-Responses/submit?dep325336738&tags=autosave#question3572590 5 A force of constant magnitude pushes a box up a vertical surface, as shown in the figure. The box moves at a constant speed. If the mass of the box is 3.4 kg, it is pushed 2.8 m vertically upward, the coefficient of friction is 0 determine the following. (a) the work done (in J) on the box by F 866 A force diagram will help you determine the magnitude of the force F acting on the box. Then you can determine the work done o (b) the work done (in J) on the box by the force of gravity (c) the work done (in J) on the box by the normal force (d) the increase in aravitational potential enerav (in J) of the system of the box and earth as the box moves up the wall P Type here to search FI prt sc F10 home F2 F3 F4 F5 F6 F7 F8 F9 F1A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are uk = 0.450 and us = 0.650. The pulley has no appreciable mass or friction. What is the MAXIMUM weight w that can be used to hold this crate stationary on the ramp? w = ? Crate 22.0 Ramp 30,0A block of weight w is suspended from a rope tied to two other ropes at point O. One rope is horizontally attached to a wall and the other is fastened to the ceiling. The angle between ceiling and the rope is 60°. What are the tensions in each of the ropes? Assume the weights of the ropes and the knot are negligible. If the weight of the block is 100 N, what is the tension in the ceiling rope?
- From Fig. P-014, P is directed at an angle a from x-axis and the 200 N force is acting at a slope of 5 vertical to 12 horizontal. a. Find P and a if the resultant is 500 N to the right along the x-axis. b. Find P and a if the resultant is 500 N upward to the right with a slope of 3 horizontal to 4 vertical. c. Find P and a if the resultant is zero. 12 200 N Figure P-014The slope of the 4.1 kN force F is specified as shown in the figure. Express F as a vector in terms of the unit vectors i and j. Assume a = 9, b = 3. Answer: F = (i it i j) KNYour cat "Ms." (mass 7.00 kg) is trying to make it to the top of a frictionless ramp 2.00 m long and inclined upward at 30.0 ° above the horizontal. Since the poor cat can't get any traction on the ramp, you push her up the entire length of the ramp by exerting a constant 100 N force parallel to the Part A If Ms. takes a running start so that she is moving at 2.40 m/s at the bottom of the ramp, what is her speed when she reaches the top of the incline? Use the work-energy theorem. ramp. m/s
- A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a rope to a rock of mass ma and makes his way over the ledge (see the figure). If the coefficient of maximum static friction between the rock and the ground is µ, and the mass of the hiker is mâ, what is the maximum mass of the friend, mc, that the rock can hold so the hikers can then make their way up over the ledge? Assume the rope is parallel to the ground and the point where the rope passes over the ledge is frictionless. mc = JuA chandelier hangs h = 0.62 m down from two chains of equal length. The chains are separated from one another by a length L = 0.45 m at the ceiling. The chandelier has a mass of m = 21 kg.Randomized Variablesh = 0.62 mL = 0.45 mm = 21 kgWhat is the angle, θ in degrees, between one of the chains and the vertical where it contacts the chandelier? Write an expression for FT,y, the magnitude of the y-component of the tension in one chain, in terms of the given information and variables available in the palette. FT,y = Using your previous results, find the tension, FT in Newtons, in one chain. FT =You are a bully. You pin a 48 kg dweeb to a wall so that his feet aren't touching the ground. Your arm is extended so that it makes an angle 28 degrees with the horizontal. The dweeb's back is so sweaty with fear that there is no friction between his back and the wall. What is the magnitude of the force , in N, you must apply to keep the dweeb in equilibrium? (Use g = 10 m/s2) This scenario is represented schematically below. Unfortunately for you, years later the dweeb is your boss and he makes your life miserable. (Please answer to the fourth decimal place - i.e 12.3445)