96.30: An 800-kg elevator acc yw -gfx8z4upj .+oh2rwu7u6belerates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg stude. /wbnqs h(17ek8mm * go+eb-n*pdbbznt stands on a scale in an elevator. At the instant the elevator g1k*p/b(qhb7z*oeb nmbenws- .d+ 8mhas 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 in t -aih6drqxzsa. vlve4qqt1m 2 kq1 no9)p1*n;he school’s elevator. When the scale reads 2qs1 .lq9x oikrqnn*a)qz 1pve a1tm4 dv;6h- 520 N, the elevator must be

  00.12: Astronauts in an orbiting;j89o u+h lreqy)(ckq space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weight woh/gqb8p2o,lessness" because, b28gw/qpoh o

  11.10: A string of negligible mass connects an objecmt -;5t*:8djb3wldg mhaf8;mm yz i 2mt of mass M=10 kg to the ceiling of an elevator. The ele;t5b;i88:f*wh 3mamtdgl2z ymm j- m dvator 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 objecit/8 oe efp34zt of mass M=10 kg to the ceiling oe4z/ip 38teoff an elevator. 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 mass on a horizontal frictdnxc(o1smrj9yfi/* e.n,u8xionless surface are connected by a massless string A. They are pulled horizontally fu/9nx iy s(cjxomn.8d* ,r1e 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 frictionless surface ; 2kqq(p5mmesx: mx2x are connected by a massmqxmske;x2 :5(q x2m pless 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 mv;jgvcnz z,0; 3 2lagvvzk:2oass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant accelk 2zjogvl,2vc; ng vazv 0z3:;eration 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 frig(qggl uk+ciyv jt -t9*38 (t )3vylibctionless surface. A 36 N constant force is applied to X * )y g3uyit9+cg3-j (ql8tg(btl kvvi as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 q u h55s;fqsg8kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what is sfs 5;58qhu gqthe value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless jhnv6adp0) c+qbp+ s 3horizontal 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 pudn j q0bpsv+a+3hp) 6clls 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 hory7ah5gx :p*qj izontal surface. A constant 35 N force is xh7 :g5pyq*j aapplied 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 ib3 o yufw-;cxev dp9:4s attached to a mass m; the other end is attached to a mass of :fb-4u3pxw;vd oe c9y1.00 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 and 3.0 kg on its ends is hung over sf3 iyk 3q-uxo rqc6-:a frictionless, massless pulley ay6r:fksxu c-o-i3 q3q s 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 9(zvf3v .mw3zyx onwr t 6ufj d8c:(-sthe diagram with m1 sliding alufn3.(o dr cyjv9:wz zx(s38t6w v-mf ong 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 isplaced on top of a larger box of6/ ,)vd lwld ipx;y 5oiug5 c)svd(j*o mass 2m as shown in the diagram at right. When a force F is applied to;6px*5o/wul),d5 vvii osyjd gl () cd 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 mass?

  17.25: A box slides with uniform accele/ e-3d) 3hv;ey obh e5d5xj1eqow5gvm ration up an incline. The box has an initial speed of 9.0 m/s and rises ve bx3vw5)gq3vh;h5mo y1e -ej/ doeed5rtically 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 re(aqsv- ukok 4:st on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coe:oqksvu -4ak (fficient 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 gravitational force,a normal a8vz adx6bnkqq,g xk ;v iy)8v+z,:)mforce 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 +x-axis is directed upward, parallel to the incline’sxigkdvzva kqbq)y;v ,m8a8:,6n+ )xz surface as shown in the figure.