96.30: An 800-kg elevator accelerates wo6*ruk9a;h 6i zlt/s 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 instant t0wvx cq7b*936g3yqjxwz0 eu whe elevator has a downward accelera y g9w7zcv0qwb 3 q3*j06xwuextion 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 onhxq;tco4 .m1* 0 tsowb+ckfl , a bathroom scale in the school’s elevator. When the scale readtmw1+ o x;t0*cc.f4bk,qsolh s 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle apk sv2p+ iy8dtqeu:cy9* (5 ykre “weightless” because

  06.16: A scientist in the Internatij 1;r zd1qb;teonal Space Station experiences "weightlessness" becausejbz;1re dt 1;q

  11.10: A string of negligible mass connects an object of mass M=10 kg to the c*/0dv;ossa -aer5qg 9i eu,qv(vsc.meiling 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 s; ,d (v9vquv*c s/qemrsiae-o 0ga .5the 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 ob. k)wo7u 1o 4az-vpyvhject of mass M=10 kg to the ceiling of an elewk7.pu4)oa 1v ovyh-zvator. The 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 masr*kw.3 t*t y. e+ddm5ib:u)b f i(/qpj tq.bpgs on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a q3bjbdtpt .)5. :+g/krdt* iy.mewbui* f(qp 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 1rl3:e 5dag(advu6 -qdae. nthorizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant accelerat 6ava5 gq:td3due1r (an.led-ion 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 a horizon72f2* imiqzaf*x2 azpa7 9ldqru0rx3tal frictionless surface are connected by a massless stri227a9xpai 3d*i70zuqfma xl z*rf r2q ng 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal frictionlkm iov5ko5e06y7+b:ad q:ts tess surface. A 36 N co 7ki+6doe 0vqaytktmsb: :5 5onstant 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 kg are connectegd/xlnz s 8,o,d by a string which has a tension of 2.0 N.zsx8 d/ ,gnl,o 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 accelerated to the rightkv rr462km re -)4fdze 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 thk)z-4r f62 md rr4ekeve smaller box?

  17.15 : Two blocks X ri(5j..s gn 7uwczql )andY are in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto blockqrnl)s c5w..j z7ugi( 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; the other end i/ylvi( ql2k7a ake (a,s attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as s lakl( i7aaqe /(y,2vkhown 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 onhs:s +ae 3z x2(t3zprh its ends is hung over a frictionless, masslehzp 3he(st +:rxs23z ass pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, ar4u hhvuew-,+: y2cmlkv 8jy+he connected by a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulle4-vje hl:umkuv, + y+y2wchh8y. 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 ma)s,* ud7fhj vym 4btu0ru zij(d :neg019rr-l ss 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 accelera4 jhry z-mgvs1b*0r7fuu )ir:d eud ,n90t(jlting the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The bo+w c 2z/0fdcucx has an initial speed of 9.0 m/s adf+z2 wccc 0u/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 initially at rest on a horizontal surface. A conlvx):aj .6 p8b+y2n a6vqporjstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction ol6ob. qp+ r6a)2vjpvxyj8a n:f 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 fz4.tsb5 ncet ,k;fh2t rictionless 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 the incline makes an angle θ counterclockwise from the horizontal. Which one of the . tc5t nt2bhkef4;,szfollowing 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.