96.30: An 800-kg elevator accelerates down*ggz4 -wxwr7qward 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(jja.p-ao hd+ scale in an elevator. At the instant the elevator has a downward acceleratio jhad.o+p -(jan 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 6)eeg d qzg2ecol 3,5*xaey :gscale in the school’s elevator. When the scale reads 520 N, th c52,*)gqg: x3a6zeygee e dloe elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” t8cjc0*fhtc t6f5r:6nox, dx1 jx+ he because

  06.16: A scientist in the Internatioh82 6ipmf 69qt5mmr kznal Space Station experiences "weightlessness" becau p6r 5z98mkq2mt6fim hse

  11.10: A string of negligible mass connects an obje :j)oix/dz5 pcct of mass M=10 kg to the ceiling of an elevator. The elec)ij op x:zd5/vator 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 negligible mass connects an object of mass M=10 kg to the4d/y713v hiqkuud ;gu ceiling of an elevator. The elevator experiences a congyuu d3uv7d/k 1ih;4qstant 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 ma w*s madr;*xnyy,u:(si(g wd)ss on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontallyr d;,: w()i*(gxyn smwsad*uy 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 hoq xu,nic80mndx85s6(b,m df s rizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surfa, 8d, 8cq6umbs(nminx sx 5df0ce 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 a horizontal frictionless surface c22wx43sali y are connected by a massless string A. They are pulled horizon a4li2 scw3yx2tally 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 qs x7k;pja 9-oin contact on a horizontal frictionless surface. A 36 N c;a kj 7xs9qop-onstant force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.lq4 xxl 76z5*u3 p+vfjgm(wss 0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acgfsxv5sl+674ml 3 zjup*w q(xts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to t472kjmfdwmc2o07,ef9w b xd xhe right on a frictionless horizontal surface as shown. The larger box has a mass dd , e9oxx4mw27wk7m2fc 0 bjfof 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 smaller box?

  17.15 : Two blocks X andY are in contact on 1mp 1llo1-:o+g riegd. tso6iq2e ly1 a frictionless horizontal surface. A constant 35 N force is applied to therlo 1i1 i1o.:ld1lemg+s 6e-pgotyq2 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-fp * plhjgzr43hdv// to a mass m; the other end is attached to a mass of 1.00 kg. The 4/h-pj/ zf3*hv gdlr prope 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 mawjadbim4 k u:vk4j8): sses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the appro4 :mvwkj8kj):a i4 dbuximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2 e9t6qp1ntedl0w1 w gn 3//xll, are connected by a cord and arranged as shown in theqtl1dgx lt1e96 l03 np/nw we/ diagram with m1 sliding along on a frictionless surface and 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 of mass m eck(,cnwsf 3xml of/ 1gxb:cpg4 -z2 +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 surfazg+/xco12 xb mek c3-:c,(n l4p gffwsces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an 01 rz(w1hj(afhpwfm , incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to (wf0 h zhmp1 far,1jw(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 sui;xz0. +a0+bja 8-x;oksu:,uelmev(d mg zy t rface. A constant horizontal 0 vu.a-,ae0z +txily;s u+dm8mk:bgx; jo(z eforce of mg/2 is applied to the box, directed to the right. The coefficient 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 f: gc5+jekjxbo(i h)1 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 following choices best describes the orientation of the applied force by the person? The g1e5:ck)i( bfjjhx+o +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.