The coefficint of friction is A 3.0 kilogram block is sliding down a 25° incline at a constant speed. оо 0.43 O 0.44 0.38 0.33 if
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- The 2225 N block shown is in contact with 45° incline. The coefficient of static friction is 0.25. Compute the value of the horizontal force P necessary to a. just start the block up the incline b. just prevent motion down the incline c. If P = 1780 N, what is the amount and direction of the friction force?Shaft and flange connections are provided by wedge in a system that transmits moment with flange coupling. The tangential force of the wedge is 40000 N and the diameter of the shaft used in the system is 40 mm and the diameter of the placement circle of the Bolts in the flange connection is 100 mm. Determine how many M16 (d1=13,546 mm) bolts should be used according to the moment transfer by cutting the Bolts between the flange surfaces. (The coefficient of friction between surfaces is 0.25. Bolt material is 4.6 quality and can be taken as Jul-Bolt=40 MPa, σem-Bolt=66.7 MPa. The safety coefficient was determined as 6.)8. Determine friction force if P = 160N
- Find the angle of banking for a highway curve of 300-ftradius designed to accommodate cars travelling at speed ofup to 120 mph, if the coefficient of friction between thetires and the road is 0.60. What is theminimum speed in miles per hour (mph) at which a carcan round the curve without slipping?Refer to Fig 33. The homogenous body A weighs 120 lb. The coefficients of frictions are 0.30 between A and the plane and 2/pi between the rope and the drum. What value of W will cause motion of A to impend? Give solution. (Ans. W= 81.5 lb)As shown in figure, find that at what distance body Awill attain a velocity of 3m/s when starts from rest.Assume coefficient of friction as 0.2 and pulleys are frictionless and weightless.
- (a) Draw the FBD of A and B when the wedge B impends to slide to the left. Friction is negligible except for the surface under B whose coefficient of friction is 0.20. (b) Determine the magnitude of P to start the wedge B to slide to the left. Please Provide a Clear FBD and Identify all the forces applied in the FBD. Please answer within 45 minutes, thank you!8. Answer the following questions about the exercise of Box A (massmA=50kg) and Box B (mB=10kg) located on the slope as shown in Figure 7. Between slope and box A, the coefficient of static friction is uk, and the angle of slope is 10 degrees, although box A and B are connected in a solid line and ignore the mass of the pulley.1)What is the maximum friction (kgf) between Box A and Slope for us=0.4 and Uk=0.15?2)What is the maximum friction between Box A and the slope (kgf) for us=0.3 and UK=0.15?3)us=0.3 and Uk=0.15 What is the tension in kgf?4)us=0.3 and uk=0.15 when box B goes down 2m, calculate the size (m/s) of the speed of box A and box B using the modified energy supply law.A scooter is to be designed to roll down a 2 percent slope at a constant speed. Assuming that the coefficient of kinetic friction between the 25-mm-diameter axles and the bearings is 0.10, determine the required diameter of the wheels. Neglect the rolling resistance between the wheels and the ground.
- PROBLEM: To prevent a box from sliding down an inclined plane, student A pushes on the box in the direction parallel to the incline, just hard enough to hold the box stationary. In an identical situation, student B pushes on the box horizontally. If the weight of the box w= 20.0 N, the angle made by the incline with the horizontal θ=25o, and the coefficient of static friction µs=0.16, who has the easier job?The block of weight W = 10 kN is pulled by the force P inclined at the angle = 15 to the horizontal. Find the smallest force P (in kN, round-off to 2 decimal places) that would cause impending sliding of the block. The angle of static friction between the block and the ground is = 15.Problem 6: At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle θ with the horizontal, as shown. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Notice that the coordinate axes have been chosen with the x axis directed up the incline, as shown. Part (b) Input an expression for the net force in the x direction consistent with the coordinate axes on the diagram. Express your answer in terms of the mass of the box, m, the acceleration due to gravity, g, the angle of the incline, θ, the magnitude of the normal vector FN, and appropriate coefficients of friction. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Part (c) Input an expression for the net force in the y direction consistent with the coordinate axes on the diagram. Express your answer in terms of the mass of the box, m, the…