96.30: An 800-kg elevavmvza t:cuu,* h n2nul.8rk0s8kd r44tor accelerates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands o-dg,gbcb jvn r 4ck(;5v++uk ln a scale in an elevator. At the instant the elevator has a downward accelcvb kj++k,gg v ncu4 5d;lrb-(eration 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 o 9u q4k8a,+ w kd;yr2j0swy)igxox2usn a bathroom scale in the school’s elevator. When the scale reads 52080 ro2wg,a 9sj kdyyq4sx)i;wu+2xuk N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightlefphfguwt07 x 0d*ia:7 ss” because

  06.16: A scientist in the Inter w / x3gkg; s-exoh+nvg(mnsq8p-g 5+znational Space Station experiences "weightlessness" bp w; sg-x3 /m (q+ engk85nvoxg-ghz+secause

  11.10: A string of negligible mass connects an object of mass M=o+ib v,y5 ofk(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 theb(v,f5+ oy oki mass M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligiblezbp 3e4h ); +roeyl+zz mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration o3l)z4 ;hy peb+r +zeozf 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 surfaphr(a3ur94lpqq 4j.h ce are connected by a massless string A. They are pulled horq9lrhar 4.3qup4 p(hj izontally 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 g f4a2jb o9z b2b gdlt:7/v/zehorizontal frictionless surface are connected by a massless string A. They are pulled horizontally across te/g: v 2f79az2b jz4ogbld b/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 horizontal frictionless surfaced1ofdvi +1ilt o)o i hh0:8f -fh(-spv are connected by a massless string A. They are pulled hori8dfi1th-h-o 1i:0+)pilsvf (o ofh dvzontally 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 hosmo pr 9ed 5vc;u9-r0mrizontal frictionless surface. A 36 Ndo9s cur5m0 -me 9vp;r constant force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg a t3tpl; f:y0 w2saobf;re 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 the va 2p ;3sylattbwof0f;:lue
ofF?

  99.12: Two boxes are accelerated to ytl,;k;7m i1cw kwxm5the right on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass ;y7ktk 1,l i mw5xc;wmof 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 conky -+g r sau,,,wzo o34atdtj.tact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force ,rk- d gsy +juoz,t.3,aw4tao that block X exerts onto blockY?

  94.25: One end of a massless rope is attached x etr7s0 i25*- 4cbsuu tz1lfzto a mass m; the other end is attached to a mass of 1.00 kg. The ro*1s0s5-u t if2 zul cx4zr7etbpe 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:)cn qv/ kx:by 1.5 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):/v nkcx y:bq the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and alb :1 9;w7 y)gvvzpeysrranged 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 mass, m2, if both the sliding mass, m1, and the tension, T,vb ye7 9zgy1s)p :;vwl in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2m as shuf 5t6)vgam r ;zvs53vown 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 coefz5 vv)m;r3fav6 tusg 5ficient 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. Thsq,.tn z 15szhe box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the anglzh tq z5n.,ss1e 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. A constant hzmspgg zi1o) ;(x)o.fwn el+d*+ee7a orizontal fo+see*7.) xlo +zi1a()wggze dmfon ;prce of mg/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 9uvm*qqd-.ox rzjbf;(tf 3+b has a gravitational force,a normal force from the incline, and a force applied by a person that all are equ9qz.bt x+3- qo( ;fvfb udmrj*al 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, parallel to the incline’s surface as shown in the figure.