In the figure, let the mass of the block be 8.50 kg and the angle 0 = 30.0°. Frictionless X The three forces acting on the block must be identified. Which forces act on the block? Tension Gravitational force Normal force O Frictional force x..................................
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- In the figure the blocks are initially at rest, so that the system is in equilibrium assuming that it is in a state of imminent movement (the movement is about to begin), the coefficient of static friction mus be: m = 2 kg M M = 15 kg m 60°What will be the cross product of the vectors 2i +3j + k and 3i +2j + k? O2i +3j +k Oi+ 2j + k O 2i - j - 5k Oi+j-5kDetermine the magnitude and coordinate direction angles of the resultant force acting at point A on the post. FAC =150 N JA FAв — 200 N C 3 m 3 m 2 m B 4 m
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- Diagram on right for Problems 12-15: Assume a frictionless pulley. T 125a N FN 351 kg 125 kg 351 kg H= 0.200 351a 45° 351(9.8) 125(9.8) 12. Calculate the force of the friction (FN) on the 351 kg m ass. EFy: N -351 (9.8)cos(45°) = 0 %3D cos(45) = sin(45°) = 0.707 FN = µN 13. Calculate the acceleration a of the 125 kg mass. EFx: 351a = 351(9.8)sin(45) - T -FN 125a = -125(9.8) + T 14. Calculate the tension (T) in the cable. (Hint: substitute a one of the above equations and solve for T) (round answer to three significant digits) a. 171 N b. 980 N c. 1255 N d. 1414 N 15. If the 351 kg mass moves for 3 seconds, what distance will it travel? (Use formula sat) S a. 4.86 m b. 6.82 m c. 9.72 m d. 14.1 mA system comprised blocks, a light frictionless pulley, and connecting ropes is shown in the figure. The B block has a mass of 9.3 kg and is on a perfectly smooth horizontal table. The surfaces of the A block, which has a mass of 8.2 kg, are rough, with μk=μk= 0.25 between the block and the table. If the C block with mass 9.9 kg accelerates downward when it is released, find its acceleration.The two 200-lb blocks are pushed apart by the 15 deg. wedge of negligible weight. The coefficient of friction is 0.15 at all contact surfaces. Determine the force P required to start the blocks moving.