96.30: An 800-kg elevator acceler7 mkeuoi;w 1v9u;tfk2;sl r5 bates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands 5x2ot7q:gi dl on a scale in an elevator. At the instant the elevator has a downward accelerid lo5xt g7:q2ation 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 schoo 2 xnzgvbez1)5hwbq+ bn: xx7e2m/x,k l’s elevator. When the scale re xbkb 5 xebwx22ve+ :mx z/zqh,n7gn)1ads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle a:ivkhh;t qn9 kgiwjql9. 5 6,mre “weightless” because

  06.16: A scientist in the International Space Station exp x :jhj-6qadw w/xtnafyu j dg*;/x(;/eriences "weightlessness" y/x: ( xg*/nhd;/ daqj u6w;j x-atfwjbecause

  11.10: A string of negligible mass connects anlp wpu:sw/h p tha2sf98; .p/g object of mass M=10 kg to the ceiling of an elevator. The elevator experie:ps/ gh;.lhp8ww s9a/2pt fup nces 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 relationships between these forces?

  12.10: A string of negligible mass connects an object of mass M=10 kg to the cd am)rc :-i*z4+aplapeiling of an elevator. The elevator experiences a consz)pma*ri-:a cd+la p4 tant 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 surfacew*piq60gz/t m are connected b6izq*wpt0/g my a massless 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 a1zjfj rg/54 pynd a 4 kg mass on a horizontal frictionless surface are connected by a masslp frj1z45 gjy/ess 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 A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass one0lzq.o-w+uomc)cr qm m f9(ua,ui08 a horizontal frictionless surface are connected by a massless string A. Theyc oc i0r)f lq(qu-9+zm08.mauemo w,u 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 a 49kx+.(m glifdwv 9zcontact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exertei9kdxg a9 lz +4(m.wvfd by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a strin-4zzh* koys (ag which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, wha-(h*ozya sk4zt is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontalh cli1;t, rzoxk;z te0(iy5+i surface as shown. The 50 k c1ryith(,;i+xltez;zo i 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 box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal surfa7up8l aph a 0/8;tfzobce. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that blockl;at/f p a87obpu 0hz8 X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; thhl8 0bfz1l.ie fy yn;)e 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 figure. Mass m accelerates downward athzfn )y 10yebi.8fl;l $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kg and 3.0 kg on i-wmv12/c:1p,ud7dvhp r8sd:x) er uclctq b+ ts ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitudpdr 1 u1h tu/cv ,crx-lbd)mdqw+:2s 7cepv8: e of the acceleration of the masses?

  02.36: Two masses, m1 and mry ym)4/n1 t 99/h+p*muzg ou cdandm*2, 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 odn/gr )p m9/n myc4dm91huu* *to za+yf 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 shown3hn 685po efei,3oxic 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 accelerati6 8f3ni 5o3c,pxohe eing the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The bch7) :;2m5pd0wd-of vue szo fox has an initial speed of 9.0 m/s and rises vertically 2.60 befcwdf u)5 o7 -;s :ovzhdefp0m2ore 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 oue hd3m7*6zzmlg hn(8n 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 th7zmluhd8 z3( e6gm *nhe 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 fl+x1e lxdv*/qorce 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, parxq l+ 1dv*elx/allel to the incline’s surface as shown in the figure.