96.30: An 800-kg elevator ar 5ozywi3 pt-8ccelerates 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 7h* eee*( xuzw22gwjcwgr. cb j1p+e -the elevator has a downward accele hez7w *.2+-1w*bg rueecwepjc (jx2 gration 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 bathrcwgbjcvn4jac( 9.c8 0 p1rqp,tie .;boom scale in the school’s elevator. When the scale reads 520 N, the elevator must bec8.ve0pp; citjr.9cawjb ng , b q1(c4

  00.12: Astronauts in an orbiting space shuttle a-he73 2ac c: quba1tqs cwzf s3i,/t5vre “weightless” because

  06.16: A scientist in the International Space Station experih kzi;qt 6liw i16cg-9ences "weightlessness" bti il66qw- h1c zi9k;gecause

  11.10: A string of negligible mass connects an object of mass M=10t,l1o1huv eunc*kq 2/ 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. Which one of the following choices describes the relat2* utukvn1,oql 1h/ecionships between these forces?

  12.10: A string of negli q./df pisag41eot(4a gible mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of e1asdao4.gfp/qi t4( 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 horizyzf6zk-ar z8 9ontal frictionless surface are connected by a massless string A. They are pullez9rakz68yz - fd 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 kgv3:m-i :fhtmf mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constan3f:f :h-vm timt 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 are conn0 .boz5pl,g 54bwoqm pected by a massless string A. They are pulled ho qbo5pbg4p5.mwo ,z l0rizontally 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 horizont1y i4bf:x ju8wal frictionless surface. A 36 N constant force is applied to X as shown :4 b uiyxfjw18to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 k*exm+2ro5kuoe9iz *gd+ dn7 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 negligible, what is t* or*uo+ 5zxgn7i2e ek dkmd+9he value
ofF?

  99.12: Two boxes are acceleratra( 2-q ixb )2whz/hw4rs t2pled 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 fop 2)(qwrih/-x b2htzalr 42s wrce 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 on a frictionless horizontal surface oitlf6 9bgf: h7ru8e1. A constant 35 N force is7t8u6ofgb9f e:1ir h l 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 massless rope is attached to a mass m; the other end is att-6(udwplrx cm8v q;6fached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. Mass m acvl x;wq86pu 6cr(-mdfcelerates 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 its ends is hung ov0n do 7)q6hmxl,rstr7 er a frictionless, massless pulley as shown to the ri,od0h6sm q7xl n7r) trght. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 an1x yns/7(nni mvli.1ld 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 y.vi/1ln 7lx1 m(in sna 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 mass m isplaced on top of a larger bsbg53iw : rp* r-w bq0cw zw.(fe3q3ubox of mass 2m as shown srwuw* w i30c zbgpb5r3qe3 bw:(.qf- 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 force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an ib*iob3nbn ,*w ov.:w xnitial speed ooxwbw3:, bibv n.**n of 9.0 m/s and 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 hkj;2ri qpmtq8g* 4k3mp7 .kv corizontal 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 distance pu pmpqri.gq2m4t;83j7k * k kvcshed 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 incac0rfc 5k6fs5 atzc6d+es2x: line has 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 horizontal. Which one of5fadctk cf02 6+5sz csre 6x:a 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.