A 0.8 lb roll of paper is suspended from a wire hanger so that it rests against the wall. The hanger has a negligible weight and the bearing O can be considered as frictionless. The two ends of the hanger can be treated as pin joints. Determine the force P required to start turning the roll if theta = 37 degrees and the coefficient of static friction is 0.29.

The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 49-lb roller and the floor is s = 0.22, determine the maximum force Pthat can be applied to the handle, so that roller rolls on the ground without slipping. Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s2. 1.5 ft 30° Your Answer: Answer units

The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 43-lb roller and the floor is g = 0.16, determine the maximum force P that can be applied to the handle, so that roller rolls on the ground without slipping. Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s². Your Answer: Answer 30° units 1.5 ft

A 8.0 m long ladder AB leans against a smooth wall making an angle of 70º with the floor. The ladder is uniform and has a mass of 40.0 kg.(a) Determine the forces exerted on the ladder by the floor and the wall (i.e. at A and B respectively).(b) Determine the minimum value of the coefficient of static friction to prevent the ladder from slipping.

In the vise shown in the figure, the screw is single-threaded in the upper member: It passes through the lower member and is held by a frictionless washer. The pitch of the screw is 3 mm, its mean radius is 12 mm. and the coefficient of static friction is 0.15.   Determine the magnitude P of the forces exerted by the jaws when M= 74-N.m couple is applied to the screw. Assuming that the screw is single-threaded at both A and B (right-handed thread at A and left-handed thread at B)   The value of magnitude P is      KN?     Note: please consider everything. Refer to the image for more clarity. On occasions, I receive wrong answers!!. Kindly please show the magnitude of P which is the final answer in " KN" in the step by step working out please. Appreciate your time!. Side note, the answer in the image is wrong. This question is very annoying!. And a lot of experts have given me wrong answers!. So I beg to show concise working out!. Also I've attached another image something to help with…

Question 3: The coefficients of static and kinetic friction between the drum and brake bar are ls= 0.4 and Hx= 0.3, respectively. If M= 50 N.m and P= 85 N. determine the horizontal and vertical components of reaction at the pin O (shown in Fig. 3). Neglect the weight and thickness of the brake. The drum has a mass of 25 kg. 300 mm -700 mm- B -125 mm 500 mm M P A Fig. 3. Brake system

The uniform 14-ft pole weighs 150 lb. and is supported as shown. Calculate the magnitude of the force P required to move the pole if the coefficient of static friction for each contact location is 0.40. Express your answer in units of lb. 6' A 14' - יך B - P

Determine the smallest force the man must exert on the rope in order to move the (80+b)kg crate shown in figure (4). Also, what is the angle 0 at this moment? The coefficient of static friction between the crate and the floor is us = 0.3. 30 45°

1. The light bar is used to support the m kg block in its vertical guides. If the coefficient of static friction is 0.30 at the upper end of the bar and 0.4 at the lower end of the bar, m kg a. Find the friction force acting at each end for x = 75 mm. b. Find the maximum value of x for which the bar will not slip. 218 kg m = А l = 318 mm Figure 1.

The clamp exerts a 145 lb compressive force on the wood blocks. Single-threaded screw BC has lead L = 0.190 in. and mean diameter d = 0.370 in. It turns in the threaded sleeve at C and pushes against B. The coefficient of static friction between the screw threads and the threaded sleeve is = 0.300. Neglect friction at B. 2 in. 2 in. 2 in. B 2.25 in. 2.40 in. 2.25 in. (a) Determine the value of the moment M in ft · Ib to increase the clamping force. (Enter the magnitude.) ft · Ib (b) Determine the value of the moment M in ft · Ib to decrease the clamping force. (Enter the magnitude.) ft · Ib