96.30: An 800-kg elevator accelerates downward aq6dd(w7bn3msx9 *6 b(b dnrqqt$ 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. b3y 2p 3vwj 2nzpycv882iy99 loi7bvr+ 1jckh At the instant the elevator hasr1 j8vjbw7y3+o9 p ic9nvl 22hk 82vy 3zbcpiy 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 weig fx l* 1tq+o. 90zyzaang9bbz,hing 500 N stands on a bathroom scale in the school’s elevator. W lo1z0 qa f*zgb9zt.x bna,+y9hen the scale reads 520 N, the elevator must be

  00.12: Astronauts in an ,oozax .0oyqdkp3nepx3v 6 9sos24 k*orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weig yvrkbxq12,sx3u9b y/ htlessness" becauxb9xsk,v12y quyb3 /rse

  11.10: A string of negligible mass connects an object of mass M=1. a,;gevn2hv;b.7z5e.- y fwm lo mlxu0 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 gravitational force by the Earth acting on the mass M hanging in t 5l;va2 .mzey.,vglen.homwbf-u 7 ;xhe 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 h ow0(qhgqut: 7w-kd 2object of mass M=10 kg to the ceiling of an elevator.q- to7u2whd gkw:q(0h 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 masb(4hge4,fjbx3) xxxos on a horizontal frictionless surface are connected by a masslex feg4 )j34bh,( oxxxbss 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg ya+,4g ykwb4c mass on a horizontal frictionless surface are connected by ac wbk4+yy, 4ga massless 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 iop9ab* gwn455qn dsnj*1en 3mass on a horizontal frictionless surface are connected by annb4jo3*gn nsqa 9 55 e*dp1wi massless 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 h phf pcuya+*61ta u(o)orizontal frictionless surface. A 36 N constant fp ca)a6u huof+(t*yp 1orce 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 conne) xx j9)z2wktpcted by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friw 29 t))pjzxkxction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless h 2n2 0fyd/1m+zllt:km.5 lipt4/hpq y beb jl4orizontal 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 the5kibmypntz q.l/2 lp0y 4 /e1lhfjl2dm:t +b4 larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contxc xy 3 v6o)0t.lk6sgmact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block 3v0tm s 6yg.6) xxocklY. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached ;(x7ywjr(mdihfa n ( )ptv ./oto a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure.ym/(inafx.) 7(vhj;tp (ow rd 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 itt zs7*0uwu fck 0x:rg)m0. huns ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceler07. kmnt r:0 guws*fhuuzxc)0ation of the masses?

  02.36: Two masses, mshn1 ktk2 mz90qm g)5smu+r /:hau e)q1 and m2, are 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 pulley. What would be the mass of the falling mass, m2, if both the sliding mass, m1, and th0)ma ngt ):2um/ s5erqk1kuh+sh mq9z e tension, T, in the cord were known?

  02.42: A small box of ma/z7lpvfge 5 t lnb8xpa,if 0zw98dhhq -- .y5jss m 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 surfaces is μ , what would be the -d,w/x.n5h fejlg 8ytfq59 vp7 z-zai 80plbh force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has ano/ *7nkqzu(sf initial speed of 9.0 m/s and rises vertically 2.60 before *sk7uzfo /(qncoming 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 initiax dzx-z(7 amps.gys;;lly at rest on a horizontal surface. A constant horizontza7;gsp-x;y . mzsx(d al force 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 grapgj 7*)6aigc7j vy h5pu0 jz1rvitational force,a normal force from the incline, and a force applied by a person that all are ec*r p jg7v 7uyig 5zj6pa0jh)1qual 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’s surface as shown in the figure.