Constants | Periodic Table te filled with physics laboratory equipment must up an incline onto a truck. (Eigure 1) • Part A The crate is at rest on the incline. What can you say about the force of friction acting on the crate? > View Available Hint(s) O The frictional force points up the incline. O The frictional force points down the incline. O The frictional force is zero. Submit • Part B A physicist attempts to push the crate up the incline. The physicist senses that if he applies slightly more force the crate will move up the incline but cannot muster enough strength to get the motion started. What can you say now of friction acting on the crate? O The frictional force points up the incline. O The frictional force points down the incline. O The frictional force is zero. Submit Request Answer • Part C < 1 of 1 The first physicist gets a second physicist to help. They both push on the crate, parallel to the surface of the incline, and it moves at constant speed up the incline. How does the force exerted by the two physicists on the crate compare with the force of friction on the crate? > View Available Hint(s)

UD 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 :

IP Two blocks, stacked one on top of the other, can move without friction on the horizontal surface shown in the figure.(Figure 1) The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.44. Part A If a horizontal force F is applied to the 5.0-kg bottom block, what is the maximum value F can have before the 2.0-kg top block begins to slip? Express your answer using two significant figures. Πν ΑΣφ. F = N Submit Request Answer Part B If the mass of the top block increased, does the maximum value of F increase, decrease, or stay the same? O increases O decreases O stays the same Submit Request Answer Provide Feedback Figure 2.0 kg F 5.0 kg

ycourses PHYS 104 01- Fall 2020 Homework Homework #3 Our friend Bob is trying to pull a very heavy crate by pulling an attached rope at an angle of 0=0.333 degrees above the horizontal. There exists coefficients of friction u=0.645, and µy={muk} between the crate and the box. The mass of the crate is 386. Using g = 9.81 m/s?, what is the minimum required for that Bob must pull with in order for the box to begin moving? Once you have finished this problem, please also determine with what acceleration the box will be moving immediately after the box begins to slide. You do not need to submit this second portion of the problem. SUS f4 f5 f6 f7 f8 f9 f10 f11 f12 E3 & 4 国 因 5 图