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Block A has a mass mA and is attached to a spring having a stiffness k and unstretched length l0. If another block B, having a mass mB, is pressed against A so that the spring deforms a distance d, show that for separation to occur it is necessary that
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Engineering Mechanics: Dynamics (14th Edition)
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- The uniform 52-kg slender bar is initially at rest on a smooth horizontal plane when the forces are applied. If P₁ = 20 N and P₂ = 86 N, they are constant and are always perpendicular to the slender bar, determine angle (in degree) when time t = 0.40 s has passed. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. 0.75 m P₁ Your Answer: Answer 1.75 m 0.5 m P₂arrow_forwardBlock A has a mass mA and is attached to a spring having a stiffness k and unstretched length l0. If another block B, having a mass mB, is pressed against A so that the spring deforms a distance d, show that for separation to occur it is necessary that d > 2µkg(mA + mB )/k, where µkis the coefficient of kinetic friction between the blocks and the ground. Also, what is the distance the blocks slide on the surface before they separate?arrow_forwardA small block of weight W is placed on a plane inclined at an angle θ to the horizontalThe coefficient of friction between the block and the plane is μi) When θ is 20O the block is in limiting equilibrium. Find μii) When μ = 1/3 and is 30o a horizontal force of 6N is required to prevent theblock from slipping down the plane. What is the weight of this block?iii) A force of 10N up the pane causes the bock to be on the point of sliding up If W = 20N and μ is ¼, find θiv) If θ is 40o and μ is 0.5 find the magnitude and direction of the least force required to prevent the block from sliding down the plane when W = 12Narrow_forward
- The bicycle and rider shown in (Figure 1) have a mass of 85 kg with center of mass located at G. The coefficient of kinetic friction at the rear tire is μ = 0.8. Figure 0.55 m 0.4 m B < 1 of 1 1.2 m Part A Determine the normal reaction at the tire A, when the rear wheel locks for braking. Express your answer to three significant figures and include the appropriate units NA = Part B μÀ Submit Previous Answers Request Answer X Incorrect; Try Again Value NB = Submit Determine the normal reaction at the tire B, when the rear wheel locks for braking. Express your answ to three significant figures and include the appropriate units HÅ Units Value X Incorrect; Try Again Units Previous Answers Request Answer ? ?arrow_forward3. A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00 %3D kg block rests is frictionless. A constant horizontal force of magnitude F = 10.0 N is applied to the 2.00-kg block, setting it in motion as shown in Figure. The distance L that the leading edge of the smaller block travels on the larger block is 3.00 m. L M m M (a) Draw a separate free-body diagram for each block. (b) In what time interval will the smaller block make it to the right side of the 8.00-kg block? as (Note: Both blocks are set into motion when the force is applied.) (c) How far does the 8.00-kg block move in the process?arrow_forward3. Blocks AA and BB of mass 10 kg and 4 kg respectively, are placed on the inclined plane and released. The coefficients of kinetic friction between the blocks and the inclined plane are μAμAmuA = 0.1 and μBμBmuB = 0.5. Neglect the mass of the linkarrow_forward
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L