| 1.5 - 8 E 1.5 1 3 Derive the expression for the torque required in Gear 1 to maintain equilibrium if the weight of the triangle is t. Friction and weight of string is negligible
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A: Given Block weight = 3000 N Coefficient of friction = 0.2 To find Maximum magnitude of W
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Q: A 3000 N block is placed on an inclined plane as shown in Fig. Find the maximum value of W for…
A: given; →weight of block(W1)=3000N→weight=W→lets take tension in cable=T→coefficient of friction…
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Q: 3- Can the system in figure be in static equilibrium in the position shown? The uniform bar AB…
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Q: 3- Can the system in figure be in static equilibrium in the position shown? The uniform bar AB…
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- The force P applied to the brake handle enables the band brake to reduce the angular speed of a rotating drum. If the tensile strength of the band is 3800 lb, find the maximum safe value of P and the corresponding braking torque acting on the drum. Assume that the drum is rotating clockwise.The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.The car shown in the figure below has a mass of 1673 kg. The coefficient of static friction between the rubber tires and the pavement is 0.6. Determine the maximum incline e [degrees] that the car can drive up if it has rear-wheel drive. 0.85 m 1.2 m 1.7 m Answer: 18.87 Calculate the normal reaction force at the rear wheels for the condition of rear-wheel drive in N. Answer:
- 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 = 15.2. A square threaded screw of mean diameter 25 mm and pitch of thread 6 mm is utilised to lift a weight of 10 kN by a horizontal force applied at the circumference of the screw. Find the magnitude of the [Ans. 966 N] force if the coefficient of friction between the nut and screw is 0.02. A bolt with a squore threaded screw has mean diameter of 25 mm and a nitch of 23 mm It carries anThe crate has a weight of 490 lb and a center of gravity at G rests on the floor for which the coefficient of static friction is equal to 0.3. If the force P = 300 lb is applied as shown in the figure below. The static friction force developed between the crate and the ground is. P. -2 ft2 ft- 4 ft 3 ft Figure 1 Select one: O a. 201-lb Ob. 300-lb OC. 240-lb Od.610 lb FUJTSU
- The car shown in the figure below has a mass of 1673 kg. The coefficient of static friction between the rubber tires and the pavement is 0.6. Determine the maximum incline e [degrees] that the car can drive up if it has rear-wheel drive. 0.85 m (1.2 m 1.7 mFigure 1 shows a railroad wagon axle and forces acting over it. There are two disc brakes on the wagon axle. Since the wagon wheels are not driven wheels, the load bearing element to which the wheels are connected is called axles. The axle is supported at both ends with bearing A and bearing B and the the weight of the wagon (G) is evenly distributed on both bearings (as G/2). During braking, two disc brakes on the axle are applied Ff force and Ft friction forces are formed on the wheels. Therefore the axle is forced to bend in the vertical direction with the effect of wagon weight (G) and wheel reaction forces (Rt), and in horizontal direction with the effect of braking (Ff) and wheel friction (Ft) forces. At the same time, the axle is forced under torsion because of Ff and Ft forces. GIVEN:Shaft material : 50CrMo4 Wheel material : GS 60 Brake discs’s material: 15Cr3 All the radiuses : 5 mm Average roughnesses for press fit surfaces: Ra =6.3 μm Wheel speed: = 500 d/d Wagon weight per…NAME Question 1 (6/20) ANSWER ON THE YELLOW PAGES The nose wheel of the landing gear of an aircraft is extended and retracted by applying a torque M to the rod BC by means of an shaft located at point B. The rod AO, on which the landing wheel is also located, has a combined mass of 100 kg which may be simplified to a point force at point G. The masses of the bars CD and BC may be neglected. If the point D is located underneath point B, the rod CD is at an angle of 30° to the vertical y-axis. At this position the landing gear should be kept stationary, dynamic effects may therefore be neglected. All components are made out of stainless steel with max=200 MPa and Imax = 75 MPa. ALO d. 800 mm 400 mm 200 mm B 300 D M 500 mm OC 500 mm A D Questions, also draw all relevant free-body diagrams: a. Calculate the magnitude of the reaction force at point A. b. Calculate the minimum diameter of the pin in point A. The connection in point A is realized as shown on the right figure. Use a safety…
- Figure Q2 below show the uniform block has the mass of 500kg, and coefficient of static friction is us = 0.3. Q2 a) Illustrate all the forces in free body diagram. b) Determine whether the equilibrium can be maintained. (Does slipping occur at O)? 200 mm A 600 mm +800 mm - FIGURE Q2Find the torque on link 2 necessary to maintain static equilibrium for the 4-bar mechanism shown below. Use analytical method, draw free body diagram of each link. O,A = 3.5 in., AB = 0,B = 6 in., O,C = 7 in. P.=50 lb 4 -152. 105 240° M12 2Two blocks A and B are connected by a tope which wraps around a peg with static coefficient of friction of 02. The block B weighs 50-lb and is subjected to a 35-lb force as shown. The static coefficient of friction for the contact surface between the block and the ground is 0.4. Find the range of weight of block B for no motion. (Hint: no motion means no sliding and no tipping). A 18 in. 24 in. B 6 in. 35 lb