A 1130-kg car is held in place by a light cable on a very smooth (frictionless) ramp, as shown in the figure below. The cable makes an angle of 31.0° above the surface of the ramp, and the ramp itself rises at 25.0° above the horizontal. (a) Draw a free-body diagram for the car. (b) Find the tension in the cable. (c) How hard does the surface of the ramp push on the car? 31.0° Cable
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- Two ropes apply a force to a boat. The first is 200 N in the positive x direction, and the second is 250 N in the positive y direction. At what angle must a third rope tension be applied in order to keep the boat at rest? Your Answer:(a) Calculate the tension (in N) in a vertical strand of spiderweb if a spider of mass 8.00 x 10¯° kg hangs motionless on it. (Enter a number.) 0.000784 N (b) Calculate the tension (in N) in a horizontal strand of spiderweb if the same spider sits motionless in the middle of it much like the tightrope walker in the figure. 5.0° 5.0° T. TR w T. TR The strand sags at an angle of 15.0° below the horizontal. (Enter a number.) 0.046688914 X N Compare this with the tension in the vertical strand (find their ratio). (Enter a number.) (tension in horizontal strand) / (tension in vertical strand) =The figure below shows a box with a mass of m= 3.90 kg on a ramp inclined at an angle of 35.0°. The coefficient of static friction between the box and the ramp is 0.250. Find the minimum magnitude of the force F (in N), applied to the box in a direction perpendicular to the ramp, that will prevent the box from sliding down the ramp. N m 35.0°
- A contestant in a winter games event pushes a 59.0 kg block of ice across a frozen lake with a rope over his shoulder as shown in the figure. The coefficient of static friction is 0.1 and the coefficient of the the kinetic friction is 0.03. What is the minimum force (in N) he must exert to get the block moving?Joe pushes down the length of the handle of a 14.1 kg lawn spreader. The handle makes an angle of 47.1° with the horizontal. Joe wishes to accelerate the spreader from rest to 1.39 m/s in 1.7 s. What force must Joe apply to the handle? Answer in units of N.This problem has been removed by your teacher and will not affect your score. A 75kg bicyclist (including the bicycle) is pedaling uphill with a speed increasing at a rate of 1.7m/s?. The bicyclist is also experiencing a 20N drag. Neglect any friction impeding her motion. How many forces are acting on the bicyclist? Are all forces on the bicyclist balanced? What is the magnitude of the net force on the bicyclist? unit 13° What is the magnitude of the normal force on the biyclist? unit How much force is she generating by pedaling? unit cam be d check answers
- An object (m = 5.00 kg) is sliding down the incline plane which sits on a table of a height H = 1.50 m as shown in the figure. The angle that the inline makes with the horizontal is 35.0°. %3D The objects slides a distance of 1.00 m down the incline in 3.00 s. The incline is not frictionless. (a\) Draw a labeled and scaled FBD showing all the forces acting on the object while it is on the ramp. (b) Find the magnitude of acceleration of the object down the incline. (c) Find the coefficient of kinetic friction between the object and the incline. (d) What is the work done by the force of friction? (e) When the object gets to the bottom of the plane, it follows a projectile path. How far from the edge of the table (x) does it land?A contestant in a winter games event pushes a 37.0 kg block of ice across a frozen lake as shown in the figure. 25°. The coefficient of static friction is 0,1 and the coefficient of kinetic friction is 0.03. (a) Calculate the minimum force F (in N) he must exert to get the block moving. 39.96 (b) What is its acceleration (in m/s2) once it starts to move, if that force is maintained? 0.686 xm/s2 Additional Materials O Reading Submit Answer P Type here to search DELL Esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 トI @ #3 $ % 3 4 Tab W R T. Y Caps Lock K Ehift V つ AThe block shown in the figure is sliding along a frictionless surface inclined at an angle theta 27.1 degrees. The block's mass is m = 4.85 kg. What is the magnitude of the normal force acting on the block?
- You and your friend are moving a 82kg box across the floor at a constant speed. You are pushing on the crate parallel to the ground with a force of 62N. Your friend has a rope tied to the box and they are pulling it at an angle of 37° to the ground with a force of 32N. Construct the free body diagram showing the force acting on the crate in order to find the magnitude of friction the floor exerts on the box.You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 5.00 m/s2. Ignore friction. What is the maximum upward force that the supporting cables exert on the elevator car?A 55.0 kg block is pulled along a frictionless surface with a force P, exerted at an angle of 25.0 ̊ above the horizontal. What is the minimum force P that will lift the block off the ground? If the block is pulled with half of this force, what will its acceleration be?