Web6. A block of mass m 5 5.00 kg is released from point ! and slides on the frictionless track shown in Figure P8.6. Determine (a) the blockÕs speed at points " and # and (b) the net work done by the gravitational force on the block as it moves from point ! to point # . 2.00 m 5.00 m 3.20 m m! " # Figure P8.6 7. Two objects are connected by a ... Webdetermine the magnitude of p required to initiate motion. Ans. P(a) = P(b) = 19.2 Ib . Q/38 . The three bars have a weight of W A = 20 N, W B = 40 N and W C = 60 N, respectively. If the coefficients of static friction at the surfaces of contact are as shown, determine the smallest horizontal force P needed to move block A. Ans. P = 63.5 Ib
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WebDetermine the smallest value of P required to (a) start the block up the incline, (b) keep it moving up, (c) prevent it from moving down. 0310 tan —10.40 = 21.800 (a) (b) block up the incline: From force triangle: From triangle: 74.8 1b 59.71b 45 1b sin 51.800 sin 28.200 030 -16.700 sin 46.700 45 1b sin 33.300 WebA second P acting parallel to the wall is applied to the block. For the following magnitudes and directions of P, determine whether the block moves, the direction of motion, and the magnitude and direction of the frictional force acting on the block: (a) 34N up (b) 12N up, (c) 48N up, (d) 62N up, (e) 10N down, (f) 18N down. F=60N (a) P=34N, up ... half height shower doors uk
Problem 515 Friction Engineering Mechanics Review at …
Weblocated between the wedge and Block B. a. Denote the coordinate system and draw the free-body diagrams for the wedge and the block using the figures provided. (7 points). b. Determine the forces between Block B and the floor. Show your work. (3 points). c. Determine the force, P, that will begin to move the block to the right. Show your work. WebSolution Verified by Toppr Correct option is C) Given : μ 1=0.2 f 2=0.3 m B=200 kg m A=100 kg Frictional force acting between blocks A and B f 1=μ 1m Ag ∴ f 1=0.2(100)(10)=200 N Frictional force acting between block B and ground f 2=μ 2(m A+m B)g ∴ f 2=0.3(100+200)(10)=900 N Minimum force required to move block B, F=f 1+f 2 … WebBlock A in Fig. P-515 weighs 120 lb, block B weighs 200 lb, and the cord is parallel to the incline. If the coefficient of friction for all surfaces in contact is 0.25, determine the angle … bunbury avis