96.30: An 800-kg elevator 4u 8wg.a nhx9qaccelerates 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. At the instant thth/i7rpjep +w*witd0l; + g q2e elevator had rgi*ettw++/qj20;h ppi7w ls 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 arla(k x0h. us/ bathroom scale in the school’s elevator. When the scale reads (/0rs u lkxha.520 N, the elevator must be

  00.12: Astronauts in an m)d 07h,m;e g*gidoasorbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightlessnes0gj wg odc v /ft +u 2dhf;r+9:,aqza75dtt/xms" beagrgd5;02mqd z7fh,/ft+xa/+j 9: ctwdo vtucause

  11.10: A string of negligible mass connects aruz8m g1lm5 x2n 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 gravitational force by the Earth acting on the mass M hanging in the elevator, and F represg zumlx r8m521ent 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 obje ,9j(1nydixnvv/i .lrct of mass M=10 kg to the ceiling of an er iv/lv 9x.1n di,y(jnlevator. 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 are g:fj j3s;ovlj*d jhd 7;kas371v 0b)q3ocvo rconnected by a massless string Afjv*0q3:dvo ;3ag j3)7kl cv; rosjsd1hbj7o. 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 friddaia+q g*2oso 1.pb8zfzxg v46 7z/ei- n0o rctionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleratxarzso-di07*aoog n b dg4fq /+1 8.pzei vz62ion 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 surf8pp /n+yw8yrr ace are connected by a massless stri 8w+p8rpnyyr /ng 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 horizontal frictio)fz)sxx.;aldq69r fk 1vkjr di f+gt/)yf- 3qnless surface. A 36 N constant force is applied to X asrf3;d x1fr ) af+gqz jif-t.vk)yq6s)d /9xlk 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 connect 0l8ie4d )dtaged 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 the value8l tga0i)edd4
ofF?

  99.12: Two boxes are accelerated to the right on a frictiong98xlkmkjc0n u s azo)w3/2i1less 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 smaller k29z3jm alonxg/s0w u1i8 kc)box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal sulgxp9ilv w* u.q l 3n4l)e6ii)rface. A constant 35 N force is appe)i3l ilv4pw9n * i.u gqxll6)lied 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 attac4 8ir.)uriu axhed 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 shownr.xau4iu ir8) 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 o* +b 1yka gzxctcmoln emrx+6778 qd)t1s)g 3rn its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acce tba8 7rl cm1mtrgxgdz6+xe)1oq+sn *c7k) 3yleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cob rh1 f1l),.0ss(e ah/egewecrd 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 me/ssl c.fw,a erhe)(h ge1b01ass, 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 og a8;htvc *y27fwu;ydn 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.atu;8 7f y;gh v*ywc2d 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 acceleratioghixtrl; ;uva245e t *n up an incline. The box has an initial speed of 9.0 m/s and rlh4; 2tg*tu5;ei xva rises vertically 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 rest on a horizontal surface. avru:p, dyjx4anx8;7 fzwh.5 A constant horizontal force of mpd7 hfn8.yzr xw 5uja:;,a vx4g/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 5h6 md. k ;sbvtio5f;e( q1dtp7iyd*oa 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 horizontal. Which one of the following choices best describes the orientation of the applied force by the person? The +x-axis is directed upward, parallodek d1t 7 ;.5is*bt 5o(iqydhmfpv6;el to the incline’s surface as shown in the figure.