96.30: An 800-kg elevator accelerates downw: dn oo.afzw)ygm*7j3ard at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student st u1x( sbs70o3)ds wdkeands on a scale in an elevator. At the instant the elevator has a downward ac3d1kws0s b oexd7(s )uceleration 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 elevatb+f ayf4lf;0-t zr jo:or. When lfb t +0 :fzao;4-ryfjthe scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle j pr 3a,qq.a,0jvmw q wzzl2+-are “weightless” because

  06.16: A scientist in the International Space Station experiences "we( 0y(gnxna yz)ightlessness" becauseyxy za(n0) (gn

  11.10: A string of negligible maszjlrq yik v*4j)rqcxtxk(/:e) h +8u l pc:x.8s 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 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. Which8lhz(rx ypvjx /qke )*t):4 ixclru. :8+kjcq one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass connects an object of mass npp+mno 7, r+-lkxl 4pM=10 kg to the ceiling of pl l+m47nrxn+ op,k -pan 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 9z28zeo 37 rdfg wcn8vkg mass on a horizontal frictionless surface are connected by a massless sf78o z28w3ge9v rzndctring 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 kgcjam+ tczh :+8ngm:e xy0l9e) mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontalt y:8n ze0m+ ahmxgj: l)cec+9ly 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 mass on a iiqcuy t*:+ hexa fs.sk)(*i.horizontal frictionless surface are connected by a massless string A. They are pulled horizoiyt+eks u(qx*ia..: s* i h)cfntally 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 frictionlmyqb*qjs(ave i)b 7u);0h5dxn5b c /ress surface. A 36 N constant force is applied to X as shown to the right. The force exerted bi57 b5jmuqvys/r*0h a( )qd)xnbce;by X onY is:

  97.31: Two blocks ofzun i2lj2n/ 9,p a,yji mass 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A forcejn/,9y2iz2inlau jp , F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerapgk j(5xu6 2,bh;qxtw ted to the right on a frictionless 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 pup2 (xq6;,ub5 xhjwk gtlls 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 on a frictionless horizontal surface.u7oew9j(wp/ o A constant 35 N force is applied to the right onto block Y. What is the /u pe9j(ow7 owmagnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is att8f zq(n8mzwjqbc7,yp r9fl 06ached to a mass m; the other end is attached to a mass of 1.00 kg. The8qcz9 fp(j ynm8qwz f,rlb67 0 rope 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 masses of 1.5 kg and 3.0 kg on i )t -x.tv djv;z9,cadkts ends is hung over a frictionless, massless pulley a- k)tc9xjtav. zd,v;ds shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a corm,a;g72i wvnyn;w0.odr 0snj d and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless idg,m;0wns na;onj7ryv2.0w 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 mass m isplaced on top of a larger box of mass 2m as sh- nf)p:w 9azbv4) ewlt1g.rauown in the diagram at right. When a force F is applied to the large box, both boxes acfe zr. u:bp4g)w1tla) wav-n 9celerate 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 b zwujz:n 46ox0ox has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to reso6nj0u wz:zx 4t. 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 init;ym3va8);v dscsi*plc3 u6ae ially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the dista; v8ms6c*a )a d yuviscpl33;ence 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 forogsfcowf 8*0 5ce 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 counterclockwisw*cg05 oo8 ffse 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.