96.30: An 800-kg elevator accelerates downm)h*vzv 4 zv;oom;sa *+ pql7jward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student sjk12j9a*dufvohdsi3nhbx0(/,kh , u tands on a scale in an elevator. At the instant the elevator has a downward accelerati/3,v *fo1k0dk9 ,ju h2hniu xjh adb(son 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 thegq * hme o7k uvvj2a,e,a2:hc4 school’s elevator. When the scale reads 520 N, hga7:oc e4me2huq2*, jk,v avthe elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bes;i9iy no2 2 cl8)ke6ubm9mhtcause

  06.16: A scientist in the International Space Station experiences "w)g5msjy:dqy +q2f; s7ijni d6 eightlessness" becadsnsj 5 jig f267 qyd:y+mi;)quse

  11.10: A string of negligible mass connects h+ j0ira.piq-;:.dtbe1s s cf 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 gravitatbcd . rfta+1ji qe0-s.ps i:;hional 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 the :3h,y 2lguu1cknh .jsceiling of an elevatok1lc2: jshg n.uh ,3yur. 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 frictionless surface ar:de zsewig2.9e connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant accelerations9ideg2w .e:z 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 onnx8/jlpc;bxj4 hg o 87 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 accele4x ;ox8hjnbc lp/7g8 jration 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 surf3s-z sqsd: h s1ib6t(face are connected by a mas(dzq1f: ibshsts6 3-ssless 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a hori9 rzcih.yv kq)aw3x .vt 9z08szontal frictionless surface. A 36 N constant force 3 rwazx90.q. svy k v8zhc)it9is 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 connected by a string which 0xqel5;vn de.5ksz 8u has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming fsk55;ldeq v8u nzx0.eriction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerat /lacp4kyenv.k83hz 99n .)iujy jxh5ed to the right on a frictionless horizontal surface as shown. yay. 3 xil)4cnu jk/ ehhvpkz9n895j.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 the smaller box?

  17.15 : Two blocks X andY are in conta 5c0 dyh-9( ajw 3vh.s5mpkuuvct on a frictionless horizontal surface. A ps dv0jh u-. (m59yukha5 3wcvconstant 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; the other end is atn q, 48cwc, hvpvl/d1atached to a mass of 1.00 kg. The v4nwclcp8 1 qd/,, avhrope 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 masse0rj1uubdh;b;vtn q:,t ce04 o s of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pj eu0t 0bc1nd ur4, tqhv;ob:;ulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connectedj,*uaq1l fj,lp 5 ijpo,)jpg) 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 pullep, 1j)lo ,jq5j* al)fuij pg,py. 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 mass 2m jx+ trfv8-qr2uu/x n 2/twf+zas 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 accelerationqfxf rru28v-t z+xwtnuj// 2+. 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 inclq:e)c ; lku6jjine. The box has an initial speed of 9.0 m/s and rises vertically 2.60u;cqjel:6 j )k 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 constantx t9z79vl0)kw q 5t(dgio, ijj horizontal force of mg/2 is applied to the box, directed to the right lx5,tw90jd(7 9ijiogvqtkz). 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 grav y6-cssz6ox1titational 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 t sxz sct-6o1y6he applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.