96.30: An 800-kg elevator accelerates divpbh w3xi3vj0f/ 4 ),w.btq eownward 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 instante9aw:acb,ou xf; t406o wdg, ets /p9d the elevator has ow:f /ue,9odt 6sa pc,w940x ea;tbg da 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 sv3+ 3zwmf xb0g;mm5w zcale in the school’s elevator. When the scazv z5w+xmg;0 bmwmf3 3le reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightle t+,z8/ bej7 s lwdsqsoto96;fss” because

  06.16: A scientist in the Internatiowye m, y4/xe obn2359ei:h;jih9pmlrnal Space Station experiences "weightlessness" becw/ry9 ymjeib9m,h2l;eohx:3n ei p54ause

  11.10: A string of negligible mass connects an object of mass M=10 kg to the cl/7dke l+xwh.eiling 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 (tel +e7 ldwxk./hnsion), 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 maftxd;bftq ,/ .sls,82jhsgt6 ss M=10 kg to the ceiling of an elevator. The elevator experiences 28stqs, l fbjd/ gt;hsx .f,6ta 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 frictionless surfac5cr ed+g1+f6rvdodneiw 4 ,-de are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constantn5fc 6+re,o vd- deidrw+g14d 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 frictyg28vgn oc 8n77ily ue+qrotd24i: k+ionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second st:gnu4ni yoc dv+ yqrgke i8o27t7l+ 28ring 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 fricthla on; ia.: (r;oyrrl*28updionless surface are connected by a massless string A. They are pulled horizlnorp.* ra ;da;o lh8(u :iy2rontally 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 on8sr ki /4 p5hcdd0ob.s a horizontal frictionless surface. A 36 N constant force is r pd5/kc0bdhi o4.8ssapplied 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 connected by a string which hbua()g( van 6xas a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligib()n uvbx(g6 aale, what is the value
ofF?

  99.12: Two boxes are accelerated to thz. slw;nwth3 i+ dlpx-51l-zre right on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smallzwis;n ptl +lz1rxd lw 35.h--er 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 a frictionless horiz w ke.8e9:bk7 leasuh5ontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exees e:ea uwbk9 h5l8k7.rts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; th :vk ue8v o7+ cks3,0jhyumk+xe other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompany:h+ 7+8u cou,m3 jykve0vs xkking 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/ dh /ds,yn 5olmp21gotym4l4b h n07p kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerat412d /ls/4otbomnl,h5y0dh pnmy 7 gpion of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as shown) lo 1 kdamryz5px97-i in the 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 krlzp) 5oma71 -iyk9dx nown?

  02.42: A small box of mass m isplaced on top of a larger box of maso8gl .os6ckt)s 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes accelerate to thsogtk6o 8) c.le right with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The boxsc6cak02a 4p +acv6hp has an initial speed of 9.0 m/s and rises vertically 2.60 before comingpva6a0k4pascc h6 c2+ 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 consta 5vgw fzo(xm )qh/e,)y3pm1vf nt 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 pusm3g1vof5 he/qv ,z )p(fmw xy)hed 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 f*vceqb-ave r 6pb .yaw ;p98-korce,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 persona8e vkv9*-bcwbqa;p6 . per-y ? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.