! Required information A 16.6-kg crate starts at rest at the top of a 60.0° incline. The coefficients of friction are μs = 0.400 and μk = 0.300. The crate is connected to a hanging 8.00-kg box by an ideal rope and pulley. As the crate slides down the incline, what is the tension in the rope? N
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- Part A A truck with mass m has a brake failure while going down an icy mountain road of constant downward slope angle a (Figure 1). Initially the truck is moving downhill at speed vo. After careening downhill a distance L with negligible friction, the truck driver steers the runaway vehicle onto a runaway truck ramp of constant upward slope angle B. The truck ramp has a soft sand surface for which the coefficient of rolling friction is lr . What is the distance that the truck moves up the ramp before coming to a halt? Solve using energy methods. Express your answer in terms of m, a, vo, L, g, ß and ur. ? (vo +2gL sin a) 2g(u, cos B+ sin ß) Submit Previous Answers Request Answer Figure 1 of 1 X Incorrect; Try Again Provide Feedback Ski's Van Lines L. Distance Icy road Truck ramp TBA contestant in a Winter games event pushes a 31.0 KG black of ice across a frozen Lake the coefficient of static friction is 0.1 in the coefficient of kinetic friction 0.3 calculate the minimum force he must exert to get the black moving? N What is the acceleration once it starts to move if that force is maintained? M/S2UD MY UTEP ← → C User Settings X Document Sharing A Mail-Alvarado, X mylabmastering.pearson.com/?courseld=12473856&key=14018101051816159781032023#/ Two packages at UPS start sliding down the 20.0° ramp shown in (Figure 1). Package A has a mass of 2.00 kg and a coefficient of kinetic friction of 0.350. Package B has a mass of 10.0 kg and a coefficient of kinetic friction of 0.110. Type here to search Blackboard Learr x PCourse Home X ℗ 7.3.3: A Strategy × b Answered: Two * G Two packages at x + For help with math skills, you may want to review: Vector Components Figure B A 1 of 1 2.00 m 20.0° W How long does it take package A to reach the bottom? Express your answer with the appropriate units. ► View Available Hint(s) At = Submit 0 Provide Feedback μA Value Units ? 74°F Sunny G✩ 4) 0 Next > 5:55 PM 11/3/2023 D x :
- When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). The racket exerts a force of 530 N on the ball for 5.00 ms, giving it a final velocity of 44.0 m/s. Using these data, find the mass of the ball. g Additional Materials I ReadingB7An 8.00 kg crate sits on an inclined plane that is inclined at 33.0 above the horizontal. The coefficient of kinetic friction between the crate and the surface of the plane is 0.300. A constant horizontal force F = 28.0 N is applied to the crate (Figure 1), and the crate moves down the plane. Part A If the crate is initially at rest, find its speed 2.00s after the force is applied? Express your answer with the appropriate units. HA Value Units Figure 1 of 1> Submit Request Answer Provide Feedback F 33.0°
- You want to use a rope to pull a 12-kg box of books up a plane inclined 30° above the horizontal. The coefficient of kinetic friction is 0.28. The rope pulls parallel to the incline. Part A What force do you need to exert on the rope if you want to pull the box at constant speed. Express your answer with the appropriate units.A stockroom worker pushes a box with mass 12.9 kg on a horizontal surface with a constant speed of 2.50 m/s. The coefficients of kinetic and static friction between the box and the surface are 0.340 and 0.470, respectively. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Delivering the goods. F₂ = 43.0 N Submit ✓ Correct Part B Previous Answers a = If the worker stops pushing, what will be the acceleration of the box? Express your answer in meters per second squared. Assume that + direction coincides with the direction of velocity. ► View Available Hint(s) Submit VI ΑΣΦ Previous Answers wwww ? X Incorrect; Try Again; 3 attempts remaining Review | Constants m/s²I Revie A racetrack curve has radius 80.0 m and is banked at an angle of 15.0°. The coefficient of static friction between the tires and the roadway is 0.400. A race car with mass 1200 kg rounds the curve with the maximum speed to avoid skidding. Part A As the car rounds the curve, what is the normal force exerted on it by the road? Express your answer with the appropriate units. ? n = Value Units Submit Request Answer Part B What is the car's radial acceleration? Express your answer with the appropriate units. Arad = Value Units Submit Request Answer
- A concrete highway curve of radius 80.0 m is banked at a 13.0° angle. Part A What is the maximum speed with which a 1900 kg rubber-tired car can take this curve without sliding? (Take the static coefficient of friction of rubber on concrete to be 1.0.) Express your answer with the appropriate units. Vmax = Submit Di μA Value Request Answer Units ?Part D Assuming that the angle at which you push on the edge of the box is again 45°, with what magnitude of force Fp should you push if the box were to slide down the wall at a constant velocity? Note that, in general, the magnitude of the friction force will change if you change the magnitude of the pushing force. Thus, for this part, assume that the magnitude of the friction force is f = 0.516Fp. ► View Available Hint(s) Fp= [ΨΕΙ ΑΣΦ = ? NA 1800 kgkg car starts from rest and drives around a flat 50-mm-diameter circular track. The forward force provided by the car's drive wheels is a constant 1000 NN . Part A What is the magnitude of the car's acceleration at t=13st=13s? Express your answer to two significant figures and include the appropriate units. aa =