96.30: An 800-kg elevator accelerates ,-c t--daohcrmfk6/ e downward 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. Ats /,e6wz qjsbl0zk:tf30vzz3 the instant the elevator has a downward acceje0lz3s0 t k6,b3 :w/fzqzzv sleration 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 thezss8fm1 -ymk0 school’s elevator. When the scale reads 520 N, the k m1sfsyzm-08elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weik*y( 5xsp hqb/ghtless” because

  06.16: A scientist in the Intewi61k ja8x33z j31k8z8bhh;zwi ac rn rnational Space Station experiences "weightlessness" becaus w8k8k6jbzx3; arzw1jhc3 hza 31i8 ine

  11.10: A string of negligible mass co 8gs m 7d.nflf3kjks1+g4bo8annects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant m8.b j4a1f 8ssl+ggdon3f k7k 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 conne sxpxkw/;g.)1 4pz2zt9pp nt 4,hhvpgh ( tnk,cts an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitudezp4gk /http4hs.2,tp ;k ),x (1xnvghw9pnzp $6.0\; m/s^{2}$ . 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 horizo3hp2b , v.a51ast;1w7l*rcsb alaj5i7wj q fpntal frictionless surface are connected by a mhacwt l w. asr5blp p,*1v;jfa a2sjq7ib7351 assless 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 mass on a horizontal frictionless surfp1g-c hhr e70sace are connected by a massless string A. They are pulled horizontally across thesghh0 c1-e7 rp 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 mass on a horizontal frictionless surface arj060 j/ uqw paypci ; val815pp)vn2upe connected by a massless string A. They are pulled horizontallplpa0vp 8v yjpaci q5/2)0 p6uwu;nj1y 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 horizontp d7q :i/fd+14aizlfxal frictionless surface. A 36 N constant force is applied to X as shown to tfiai l1f+d4/ pz 7dq:xhe right. The force exerted by X onY is:

  97.31: Two blocks of m/o(i*vnsb1 79oljp8n zzc8idass 1.0 kg 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 negligiblenvi8co zj z17bnil9(d po*s8/, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionle()g ztg;48zf emjmtt3ss horizontal surface as shown. The larger box has a mass of 9 kilograms and the smallj z8gt 4(tetg;fm z)m3er 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 onl1-eo.9srh4 tuz t oc kn86 z:qi(xjr) a frictionless horizontal surface. A constant ito(hn )6j cx.:zr zl41-r9u8es qtko35 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 massles 1pxsa*cm *-cps rope is attached to 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 fimc*s-p c1x* pagure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kgap :a2ndgn 8bu 4pjw(zo: ,b4d and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximng ::,pp(za da ob84d uw24bjnate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 z4abrx:3s m9htxh 53z 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 the tension, T, in the cor 54rh9amhxz 3x:ts 3zbd were known?

  02.42: A small box of mass m isplaced on top of a larger box ofxl/fg6fvdi+ y:4w(:1 r quvlo mass 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes acceleratw+4qxvufd(:/fy6 vlr io g1l:e 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 acceleration up an inclinz /lffrdum:*,z6eb*ce. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest/,zfdcmr6bf **:ez ul. 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 ,t ted7h+0tm3o 40 ah. dws;ru+xnygerest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of frictit4dt nrt +sa+7w.heo3gmd0x h0u;ey,on 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 fob ic u x0mk6v4un:*c,0kxjyq0u+xf l 5rce from the incline, and a force v4y xu*ciju0m50lxb :xknfq0kcu,6+ 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’s surface as shown in the figure.