1. (₁ a= ? 8= f= 7.5 N ? Free-body diagram F₁ F2 Enter answer accurate to 4 significant figures. m/s² degrees F₁ F₂ 45° F₁ = 10 N Two children pull a third child on a snow saucer sled exerting forces F₁ and F₂ as shown above in the figure. Find the acceleration a and direction of the 58-kg sled and child system. Note that the direction of the frictional force f is unspecified; it will be in the opposite direction of the sum of F₁ and F2. 30° F₂ = 8 N 4

Three ropes are tied together as shown and are stationary. Assume T1 = 87 N and T3 = 15 N. Find the tension T3. T1 30° / T2 45° T3 Express your answer with the appropriate units. T3 = Value IN Submit Request Answer

Objects 1 and 2 are shown below. Object 1 has mass 20 kg, object 2 has mass 9 kg, and the kinetic coefficient of friction for object 1 on the table is 0.3. If object 1 is pushed so that it is moving away from the pulley, then find the magnitude of the acceleration of each mass and the tension in the string. motion m2 8. acceleration magnitude D. 5.304 m/s? E. 5.069 m/s F. 4.355.m/s A 4.101 m/s? В. 4.813_m/s C. 4.532.m/s? |--/ 9. tension А 38.93_N D. 44.01 N В. 46.13.N E. 41.2_N C. 42.58 N F. 48.44 N /--/

The two forces applied to an object are shown in the figure above.   Question: In which quadrant does the acceleration vector of the object point?     a. IV   b. III   c. I   d. II

Problem 6 Elevator m 2 m The elevator shown has two equal masses suspended by ropes from the ceiling and is moving downwards at a constant speed. (a) Find the tension (T₁ and T2) of each rope. (b) Now the elevator is accelerating upwards at 3g. What are the tensions now? (c) Suppose the elevator keeps increasing its acceleration until one of the ropes break. Which breaks first? What is the acceleration of the blocks immediately after the break?

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Calculate the force mg of a car that is heading up a 4 degree angle ( 4 degree angle with the horizontal) with mass of 1500kg. a/ find the component of mg perpendicular to the incline pllane b/ find the component of mg parallel to the incline plane ? c/ mg=? N

4. Two physics students push a third physics student on a “wheelie” chair with a horizontal force of 112 N [E] and a horizontal force of 130 N [S]. If the student in the wheelie chair moves at a constant velocity, determine the magnitude and direction of the force of friction. please hand write it clearly

8. Two masses, connected by a massless string, hang over a pulley that connects two inclines (Figure 8). Mass m, is 8.0 kg, and mass m, is 12 kg. The coefficient of kinetic friction for both inclines is 0.21. Determine the acceleration of the two masses. A m, m2 0, = 26° 02 = 39° Figure 8

1. Two forces F1 and F2 are acting on a block of mass m=1.5 kg. The magnitude of force F is 12N and it makes an angle of 0 figure-1. The block is sliding at a constant velocity over a frictionless floor. 37° with the horizontal as shown in Figure-1 (a) Find the value of the normal force on the block. (b) Find the magnitude of force F, that is acting on the block (c) Find the magnitude of force F, if the block accelerates with a magnitude of a = 2.5 m/s? along the direction of F.