96.30: An 800-kg elevator acce /h-- z 8xgg,:fdqnk of3u/sm2ckgpi)lerates 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 a 1ooa m4s grxgmphyo85,r)+u1 9 k5dlkn elevator. At the instant the elevator has a downward acceler 5hm 8ygo luk)19rdopx+g ros m,45ak1ation 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 bathrof m8pc.f edoix b)1oy)v;ft1.7y /qyiom scale in the school’s elevator. When the scale readspm1e 1f)ffv.8 oocd. x/;yyq)7yit bi 520 N, the elevator must be

  00.12: Astronauts in an orbiting space s *3ts7u d9a : f*/ch obcao.;ssz.yzvehuttle are “weightless” because

  06.16: A scientist in the Intern d3ckz 9 sdei79qhvzm qa)9s06ational Space Station experiences "weightlessness" dz9 sq36q09v az 9)skcdhmei7because

  11.10: A string of negligible mass connects an object of mass M=10 kg to the9 dx 9/ta3-w2ikepmds ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. tp 2e/dd9i- xwa93ksm 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 negligible mass connects an object of mass M=10 kg,e x9rl25pz )odrvtj/ to the ceiling of an elevator. The d,r v2px5j/lr o)9zet elevator experiences a constant downward acceleration 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 frictionlesk2wa 1 ; jh.whg.tf*l,7jkwf hs surface are connected by a massless string A. They are pulled horizontally acklhtj j2 ,7hkw afw1h .g.w;*fross the surface by a second string B with a constant acceleration 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 frictioe v7w 7/x oh4rdseq61onless surface are connected by qx76we4o ehr1od/v7 s a massless string A. They are pulled horizontally across the surface by a second string 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 mass on at s*3t1 vgusr; horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface ;g3*tu s t1vsrby 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 frict3 nj(p)7 i +hul)g ginjzf1kfr)2o(ecionless surface. A 36 N constant force is applied to X as shownhgkenn fz) (2)j )jc+p l73(rogui 1if to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by apnt9ryz6905 v0jk6 +trxx)b bfv* q ii string which has a tent* 0j+5nv0 rf vq6by9i6b )it9 kxxzrpsion 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 accelera8)krhf02h7;lt;w kl2bj 0bvs+ bah* h tsq:czted 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 pull on the s +wa*hc 0l 78;zshskkrq2b2)thjb0 ;ft:hvlbmaller box?

  17.15 : Two blocks X andY aretsc wcl62( on; in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitu;o w6l(ts 2ccnde of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is bn()od o3ekrh e x3qnm0a9 +i-attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. Mass m accelerod +xr- )3bi0a3hokn 9m(qneeates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with 9/ g-5(*uf jflg qucrbmasses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massles 9lf q-b/gj*5fu(ucrgs pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as shown in ca3 7h 2,vhw w/p7ovhfthe diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulley. What would be the mass owc 77wa3op, vh/vh f2hf 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 larg xq 8to4 4.c(lzpuag1sp2a2siv z ,xo.er box of mass 2m as shown 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 accelerating the smaller 2x,c41 ps8xqzlstp.. aguzaivo4 2 o(mass?

  17.25: A box slides with uniform acceleration up an inc t 6)h(jo;) qbf ;9dpzpvz4wn)a4 gqgcline. The box has an initial speed of 9.0 m/s a)qnzhz4;w6 tp4o v;a gdc p(qjg)f9b)nd rises vertically 2.60 before coming to rest. If the angle of the incline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initiay+e,z0rx whqz:h( z/v* fnt 2clly at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the distance pusheezn /hfz+: q(2vyth0 * ,zrxcwd 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 frictic7-16n jpzt ky+o3refa x:(eionless incline has a gravitational force,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 pzy(6one:je7ktf -xir a +c13the incline makes an angle 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.