96.30: An 800-kg elevator acc:ogdx4r7a6f nxg5 j- is l/;pcelerates 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 inc qwm7xabxw( 3x 6phfjg7-, * t jnhlzm2(h4t5stant the elevator hn (lmh3hm(htx7jxbq*cwa7zgw xf-64 2t5 ,p j as a downward acceleration 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 inn; je*duz2sqxvo6a k -+7f0yv the school’s elevator. When the scale reads 520 N, the elevx06 7 -2n*u jo fvae+kqyd;szvator must be

  00.12: Astronauts in an orbiting space shuttleksbu2uj ut -k2mp5.0c are “weightless” because

  06.16: A scientist in the International Space Station(1ykypjgu 2:rq :k, zj experiences "weightlessnessyrykk g1uj,pjz::q ( 2" because

  11.10: A string of negligible mhcrhf/ dv:8n ,0x t2p1+iff maass connects an object of mass M=10 kg to the ceiling 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 actingn/tff:r a8cfdx i 0+2h1 ,hpvm 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 5ce6gv3ubp6ly x.j2 r mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences352rlgcu6y ejpx b 6.v 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 fricf6 h sjn614 .7w/csvgw)6djju djc /tbtionless surface are connected by a massless string A. They awfv4u sjgj/ 6d6.17jw/d hts6 jc)cnb re 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal frictionl6xh(o ghd iy l3.hal48ess surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with ag loh(3i8 al6 yhxh.4d 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 ozmdr+ whfa/8 3n a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally acrosz83wr +fha /mds 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 frictionlergpfxaj )nr/x d.0 6-uss surface. A 36 N const6rd)j0 x n /xprufa-g.ant force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0/ 41dqh s4oary kg are connected by a string which has a tension of 2.0 N. A f4qsh4ryaod 1 /orce F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on ar:(xpdvi ;/ d dwu. :*pbnczj( 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 horizontpxuz /( .ndv;dr:ji *wp:b( dcal force pulls on the larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frlp xt rh6rywpn+4 i6)+ictionless horizontal surface. A consyh+prp)w6 il+ 46txnrtant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; t,2 nh1m.u+gnq hxq0djzkm.:rhnieo0:y4 /yche other end is attached to a mass onnxjy1g: mk. zd.u,nh0m+i h/hq240oc ryq: ef 1.00 kg. The rope is hung over a massless 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 andd5: euc7,d, n)mty-eld-sn w d 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of th :nu7e5-m d,t,dsdwln)c-e d ye masses?

  02.36: Two masses, m1 and m2, are connected 8c6x*n vtz/.fw2r lpoby a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface anf r8 *2t. xvcwnop6l/zd m2 hanging 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 otnf./c 2kcl /jf mass m isplaced on top of a larger 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 .f2 /c c/jnltk surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceiidge uap3f o:z;1b4 1leration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle ; iidbfe3z:aopg4 11uof 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 initially at rest on a horizontal surface. A coj ;lc/ g26wat-ajj yc/nstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the su2ja w-6yt /c jacg/l;jrface 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 incyt3*/yjv/gm6v dii .kline 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 the incline makes an angle θ counterclockwise from the hori6gidy3tkvi . mv y//j*zontal. 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.