96.30: An 800-kg elevator acceleratejn0ddavu u 6,l8rxuws-( jr5biu9x)1 s 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 elevatg3-w1*0+g ne nxn vntbor. At the instant the elevator has gv t+nnxw31-bn*g n0ea 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 N stands on a;4t*ta:ur zvha6 83m e mpk asr)7qnr0 bathroom scale in the school’s elevator. When the scale reads 520 N, thk*7t :t)rs anmuvha;4a8e r p0mq 63zre elevator must be

  00.12: Astronauts in an orbiting space shuttle are “wei;0 v3bex+)yfk3pb0u u0xuqmz ghtless” because

  06.16: A scientist in the International Space Station experiencego(5 c8ep*sm n6czid s jx/0si15z l3ks "weightlessness" becajz/l5p 68 k5sncz1e0 mgx3osdii*(cs use

  11.10: A string of negligible imormj9o hf*t/qs dt;ld(+d29il4) q mass 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. Which one of the following choicei (m99 om;*dfrtslq4 2+/ dot)djliqhs describes the relationships between these forces?

  12.10: A string of negligible masdn;vf pi5j2 *f82lgc ks connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward accj8n*cf;v pf kl2dg5i2 eleration 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 surface are connhuxg- +; q3rlywy* v)pected by a massless string A. They are pulled horizontally across the surface by a second strinh+gy)vx yr3-;wlq u*pg 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 horizontal frictionless +hr:r0ni*tg qvc:m +uwh:n8s surface are connected by a massless string A. They are pulled horizontally across the s8s*rh:irqv + : gc+thmw:nn0 uurface 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 qr sgfd*k:w2 q4 o,n;d33pmu ksurface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant accel3 q4;rsod,2m pq: w3*k nfdkgueration 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 frs*b + n 0a1fwpyoux(-oictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by X onY is:-wp0sfy1 na ( ubo*x+o

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string which has taf mu /2p-94hhvk)fp+zu b t(a tentf)/ tmh+-9u2bzpuv4p(hka fsion of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the rig-n vr/id5g 4iuz9 /pygv 8xfv+ht on a frictionless horizontal surface as sif/pig v -d+58gvvuyxr4 n9z/hown. 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 horizontal surface. srpn1ma,rtt xy,2+2m A constant +p2nxy,srm t2 1ar,tm35 N force is 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 5ms(t q u3d:) jma,yhkattached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accomm)h(,:uj ad 5kymqt3s panying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses (xleel8.+som3x g;n h nmd 3g/5/tzddd v6 cq*of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is hv+eq6 xl(538 sdtdd/ /*z3 l.en gdncg;mxomthe approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are co:: m db(zieo*zyg5w q7nnected 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 of the falling mass, y7*:o dzb5:gq( iwzmem2, 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-po4i j(x h2aw mass 2m as shown in the diagram at right. When a force F is applied to the large box, both jh4w-pi (o2ax 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 inclidnm ;ik4 pfd08ne. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle0nf8pkmi ;dd4 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 copj.e/m 3i4e+ yi b/bxrh y;jk:nstant horizontal force of mg/2 is applied to the box, directed m+irhbkj3 e; p.y jey/4 ibx:/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 norm44o bgluoo;0val 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 of the following choices best describes the orientation of the applied fooobvl 4;og 04urce by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.