96.30: An 800-kg elevator accelera8 rj bemraok5z q-j;; 9.t3fqdtes downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands on a scale in an elevator. At the instan2 q cvlvzti 1kel/y;+oibj 08a:fqu3:t the elevator has a downward acceleration/ v:u i8koq3b f0ceiqyl ja1;t :zl2v+ of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a bathroom scale in the schoo1ddly(2a68d xup x,gbgv4 nc e0 5b2qil’s elevatvx1,uyl xi04pa cgd2d n5 d8eq 26g(bbor. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttpo.k yr26evt( h 8tpkq29mm+)t. qngple are “weightless” because

  06.16: A scientist in the International Space Station experienc (4mirwfqlq5r ; w0eo3i ck.s6es "weightlessness rswqm. rc5eliw(q 60f 3i4;ok" because

  11.10: A string of negligible mass connects an obsgx gmz3b77xxx.p+k 0ject of mass M=10 kg to the ceilingxpg0 xx7 3 zb7mxs+.kg of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trepresent the magnitude of the force on the mass M by the string (tension), G represent the magnitude of the gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force acting on the mass M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligibl b,nnv k(*n98xg3-9r g qmnx(ct9wdxua;y /vee mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward accelerx9*3 (v9xn8 - qvd k9byw(/;rgx tgencum nna,ation of magnitude $6.0\; m/s^{2}$ . Let Trepresent the magnitude of the force by the string (tension) acting on the mass M, let G represent the magnitude of the gravitational force by the Earth acting on the mass M, and let F represent the magnitude of the net force acting on the mass M. Which one of the following choices describes the relationships between these forces?

  03.06: A 2 kg mass and a 4 kg mass on a horizontal fric,p.x qn4k5 o2 .-ge of7w7bu3ytdyvtttionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant .,of.yq y24e wu 7x5pd7o tvbtt3ng-kacceleration of $12\; m/s^{2}$ .
What is the magnitude of the force of string B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal h) p5ymnn c7d)frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second st)m)dcn n p5y7hring B with a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the force of string A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass8hvnn v/ 1mca(; h8av;kj eeya9h3*d w on a horizontal frictionless surface are connected by a massless string A. They are pulled horizonjv( * 1whe;n9ha3mkah 8evya; ncvd8/ tally across the surface by a second string B with a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal fricti9i*t ;99/dalq uylbqqkmmybbz + f;l4k 8,0wgonless surface. A 36 N constant force is applied to X a/0b gklmuqq ; 89f+9ky tazd*biy9l4m;,lwbqs shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kgq8 ns c icumuv*exw3ct.q).b/ij(6, q are connected by a string which has qbxtcs,( e6m8wqcvu i)c.q /j3u n*i.a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are acceleratt)sa( fq18jhh h5 5m:op7 0e/pkwewboed to the right on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilograms. If a 24 newton horizontal force pulls on the larger box, with what force does the larger box pua8 m5jwo h7p )qbseh t/:ow5phke (10fll on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal y vi+tb3cd:jj 5l;8l qsurface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the 3lj+c it8q b;:yldj5v force that block X exerts onto blockY?

  94.25: One end of a massless ropex2 iv7m 2b e:qeh beg61 irvzdem1(3q+ is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a masslhe xgiq vmeimb b+zv r11d732q e(:e26ess frictionless pulley as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kg and 3.0 kg on its ends is hung over um uwcbe9-9poo*os9 + a frictionless, massless pulley as shown to the right. What is the approximate m+e-c 999smu ow*pou obagnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and zw3r-f.r jxoyr v -9d/mym7o0 arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 ha o3v9fx.- ryozrwdm7 rj0 ym-/nging from a light frictionless pulley. What would be the mass of the falling mass, m2, if both the sliding mass, m1, and the tension, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2m as shw w)ae w am18b7lh7ii6own in the diagram at right. When a force F is applied to the large box, both boxes accelerate to the right with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force acc8abe wwwha17i 6lim)7elerating the smaller mass?

  17.25: A box slides with uniform acceleration up anhjcu* 40x l5.sunf zv3k9 raj(hu0gw( incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the incline ish.ga 0lc(0ukur(9fu 3zx njv4hw*5js$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initially at restfejb8: m6es*ebl+u fy (us64q on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coeums :q*(uy86lbfb e s 4j+6efefficient of friction of the surface changes with the distance pushed as $μ = μ_0x$ where x is the distance from the initial location. For what distance is the box pushed until it returns to rest?

  15.24: A mass on a frictionless incline has a gravitational fu.bz/ j5/a5 6dbxurr iorce,a normal force from the incline, and a force applied by a person that all are equal in magnitude. The mass remains at rest and the incline makes an angua izrbd./556/urbx jle θ counterclockwise from the horizontal. Which one of the following choices best describes the orientation of the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.