96.30: An 800-kg elevator accelerates dpw+xtg. ka36 fownward 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 ani gt qe3,)7o-o+usel i elevator. At the instant the elevatorit, igsq3ou+ -o)7lee has 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 c -mj/e0/cyygN stands on a bathroom scale in the school’s elevator. When the / 0c/yejm-ycgscale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttlf xasylv,3t+vgxq0; xl 2//wu sf8 q6te are “weightless” because

  06.16: A scientist in the International Sp.sob:tg ki u68ace Station experiences "weightlessness" oui8t.:s6g k bbecause

  11.10: A string of negligible mass connecyr tzi zt-oz 554tlm1nk*p7)kts 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. Which one of the following choices describes the relationships between these fori1 zoy-k7 kzz mrntp5l)4*t5tces?

  12.10: A string of negligible mass connectl9c keq ;ob)fmm4r d;2s an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleradf ; e)b2c;k9qomlr 4mtion 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 frict n24w/puf be fgf03 if/lhq7)wionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B withei 0n p hf f4gw)uq23fwl/b/f7 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 horiz d nnghnnv921fp)o.dvsjg68 y ;(e)v bontal frictionless surface are connected by a massless string A. They are pulled horeopj.6 nv f(1 dn nsg)vb89 )vnd2;ghyizontally 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 horizonta93uq )j xwughmm 6gf. k2n7a5jl frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a gm253)9xkmu7gf ujqhn j 6w.aconstant 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 /ghf 7eidfp98frictionless surface. A 36 N constant force is app p9fef/8idhg7lied 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 are connectedmdh r.u+oo45m*ty ml 37efn3jbd 0d ,l by a string which has a tension of 2.0 N. A force F acts in the di.yd7m+ot od m4nr5e 3l3j, 0u *bfhldmrection shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionle.en- agxv 1(eess horizontal surface as shown.x1 (e eng-ae.v 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 box?

  17.15 : Two blocks X andY are in contact on a frictionless horizona2oi d ,;qovx k 92trmeaqo11*tal surface. A constant 35 N force is applied to the right onto block Y. What is the m oam21ixodokq; 9 rav*qt,12eagnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is 6 5 grvbfo ;rc -ejnfnk(q+,-rattached to a mass m; the other end is attached to a mass of 1.00 kg. Th6-5-c frnr;rf neq gkv,o+bj( e 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 its en4kt1ufseky1 wr)q9;3 v ynhi;ds is hung over a frictionless, massless pulqwn4h)fys1yi3 v; u1k;ek9t r ley as 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 cord and arranged al8*khsyfs- 7u s 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 -sy ul8shk *f7of 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 9c+ adcz/fdj- 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes accelerate to dc9za+c dfj/-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 3rl:fnl2l xgp4. hl*04s ok4-m nxwmqan incline. The box has an initial speed of 9.0 m/s and rises vertically o xs k0ln-g4pf.4: 3qmnlr4*lmhlw2x 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. A constant h7)udkl ljz 9g6orizontal force of mg/2 is applied to the box, di7lzjk96 l u)dgrected 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 a gravitational force,a normalm*i.zs. ga *.c)nmtbj force from the incline, and a force applied by a person that all are equal in magnitude. The mass reman g*zbs.mam.)jc ti.*ins 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.