A 55.0kg bicyclist (including the bicycle) is pedaling to the right, generating a 210N force. She is experiencing a 50.0N drag. Neglect any friction impeding her motion. Are all forces on the bicyclist balanced? no |Fnet= m a = 210 speed: increasing unit unit m/s²
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- moodle.nct.eduom/mod/qi -Learning Portal Courses - Reports - e-Services- Academic Departments - ETC - CIMS - A 17kg crate resting on a horizontal surface is pushed as shown. If the coefficient of static friction u, between the surfaces is 0.24, what is the minimum force (F) required to start the motion? O a 4.08N O b. 70.83N Oc 39.98N Od. 694.17N Windows buut An object of mass Skg is sliding with a constant velocity of 10m/s on a frcitionless horizontal table. The force needed to keep the object moving with the same velocity is. 144 4- # 4. 6. V.1. A student applies a force of magnitude 75 N at an angle of 37o with the horizontal to push a 52-kg sled a distance of 4.0 m across a frictionless surface. Assuming the sled started from rest, find the final speed of the sled. 2. A student applies a force of magnitude 39.0 N at an angle of 22.6owith the horizontal to push a 4.00-kgtextbook 1.00 m across a table from rest to a final speed of 2.00 m/s. Find the work done by friction on thetextbook.A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. a. How long must a 500-N horizontal force act on the body to increase its velocity to 8m/s? b. How far will the body travel while the force is acting?
- ANSWERS MUST BE IN 3 DECIMAL PLACES 1. A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. How long must a 500-N horizontal force act on the body to increase its velocity to 8m/s? 2.. A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. How far will the body travel while the force is acting?Consider the figure shown in the following figure. You are loweringtwo boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks move with constantvelocity of 10.0 [m/s]. The coefficient of kinetic friction between theramp and the lower box is 0.555 and the coefficient of static frictionbetween the two boxes is 0.750. A. Draw the Free-Body diagram of both blocks. Set the ?-axis parallel to the ramp. B. Write Newton’s 2nd law along the ? and ? directions for both blocks considering their state of motion (accelerations). C. What are the magnitude and direction of the frictional force on the upper box? D. What is the magnitude of the applied force? E. Determine the angle at which the top block will start to slide down the bottom block.A 3192kg car is going up the Amerat hill, at angle 16.8, with 2 people inside the car each of 49kg. The car suspension provides 1444N of lift, and it is accelerating up at 5m/s². The road provides u=o.4. What is the force provided by the engine? If needed, use g=9.81m/s2
- Consider the figure shown in the following figure. You are loweringtwo boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks move with constantvelocity of 10.0 [m/s]. The coefficient of kinetic friction between theramp and the lower box is 0.555 and the coefficient of static frictionbetween the two boxes is 0.750. A. Draw the Free-Body diagram of both blocks. Set the ?-axis parallel to the ramp. B. Write Newton’s 2nd law along the ? and ? directions for both blocks considering their state ofmotion (accelerations). C. What are the magnitude and direction of the frictional force on the upper box? D. What is the magnitude of the applied force? E. Determine the angle at which the top block will start to slide down the bottom block.You are pulling a string with a force of 209N attatched to a heavy box of mass 27Kg across your carpeted floor. The coeffiecent of kinetic friction between the object and the floor is 0.29. The string attached is at an angle of 48 degrees with respect to the horizontal ground. With what acceleration is the box attatched to the string. -4.05 m/s^2 -5.75 m/s^2 -4.41 m/s^2 -4.01 m/s^2 -5.18 m/s^2causing the crates to 9. In a pickup game of dorm shuffleboard, students crazed by final exams use a br to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed fro rest through a distance of 0.90 m by the horizontal 25 N force from the broom then has a speed of 1.60 m/s, what is the coefficient of kinetic friction between the book and floor? d hase is retarded by e
- cs (1) Lab. section 1 rd My courses First Semester 2020/2021 Faculty of Arts and Sciences Physics (1) Lab. section 1 Determine the resultant of two forces if EFx= 40g.wt and EFy=100 g.wt, using method of components Select one: O a. 111.8 g.wt, 63.4° O b. 122.1 g.wt, 55° O c. 107.7 g.wt, 68.2° O d. 116.6 g.wt, 59° O e. 104.4 g.wt, 73.3° page Next pag NEXT ACTIV Jump to.. Physics lab 1 2020-202Vy mปs 3 m/s 1. An object of mass of 4.0 kg is initially moving with a velocity v, as shown. It then experiences a force that changes its velocity to v,, as shown. The object's change in momegtum has a magnitude of which of the following. B. 8.0 kg m/s A. 4.0 kg· m/s C. 12 kg m/s 2. What would be the change in kinetic energy of the object? D. 16 kg m/s A. 16 J B. 18 J. С. 32 J D. 64 J77 K/s l A:0. docs.google.com/forms Sove tne peiow question ana then seiect the correct answer Sam pushes toward the right on a box with a force of magnitude 31.0 N. Sarah applies an 11.0 N force on the box in the opposite direction. The magnitude of the kinetic friction force between the box and the very smooth floor is 4.50 N as the box slides toward the right. Also, the magnitude of the normal force is 98 N. Find the box's mass, the box's acceleration in the x-direction, the box's acceleration in the y-direction, and the coefficient of dynamic friction. Choose the correct answers * m = 10 kg, a, = 2.55 m/s?, a, = 0 m/s?,p = 0.5 العربية الإنجليزية