96.30: An 800-kg elevator accelerates downp-kb9q nk /ntszl s: p,x/+(av-t3 hfrward 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 instnvhx:0c0i r9k)evld.ant the elevator h0l. d) xik:h vc90nevras 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 the school’s b .w2zah8r 2rfelevator. When the scale reawb raf hr228.zds 520 N, the elevator must be

  00.12: Astronauts in an orbiting space h5s 2is+wr k0ashuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightmoj( r:+oy zt3lessness" because3(ootrz+myj :

  11.10: A string of neg bqn(g)t:+tk rligible mass connects 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 r)qrkt t (+bgn:epresent 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 objfw3s t)cdoec /imc206ect of mass M=10 kg to the ceil )wi3s6ccf e0/cod2m ting of 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 hu );h4cc.f f6grff3m9e(n qzeorizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acqncr zecfh(u6.934 fe fg mf;)celeration 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 90q f1hyixl ro1tz7z)are connected by a massless string A. They are pulled horizontally across the surface by a second string B witxlir1z1yq70z9 t f oh)h 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 4yrw 9p3r:9 m2cqfpepxazh8(b;g29 x w kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizo bxw : 9g9c 8parx(p 322yrzqmfp9eh;wntally 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 horizontal fricti 1t9vrcan79ovn1f 8s x mml,f0onless surface. A 36 N constant force is applied to X as shown to the right. Th9co, s xm 71vfrflnn0amt981ve force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg go3iv;j kwv q/q7lw.q kh h,v rh(9+8iare 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 negligik7vq wi ,8hovq3 gv 9w;l(i+qjh/hk.rble, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionleskixk3 g4n2oo sr8978 zqk5txcu01 yzf s horizontal 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 the larger box pull on the smalle zq0o32tfc1kynk4rxg8z k8i 7 us5o9xr box?

  17.15 : Two blocks X andY are in contact on a fw3 c-djo;n)mz rictionless horizontal surface. A constant 35 N force is applied to ;nz om-d 3jw)cthe 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 toxd:0zg:b6onk-at)x dmzl,a+pi i8: y a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frict- y:ixptb:6nzxk odl :giza 8 a+m0,)dionless 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-k5rm 8h6owho)t z0mf.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the 6 omt 8mw)h-5fkohr0zmasses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrangedi ztb )-jqc(4l as shown in the diagram with m1 sliding along on a frictionless surface and m2 hangin qt b-4)zcl(jig 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 kfv4qajq.jwgwf - l+95m/ 9ngmass 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/q-5qj.9+knj a fvg4fmgww l9 , 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 acceleration up an incline. The bjn:i fm1 er+4,sway*qox has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of ta,1fm:es+r4w * jqnyi he incline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initiallryi2z5u th a1 z8nu+5qy at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. 2zy 5 nu58+ha1r iqztuThe 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 .kmth,7 iun: shas a gravitational 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 horiz.sh,7:kinmut ontal. 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.