96.30: An 800-kg elevator accelerates downward 8kd2wdm*1a - 7icu3v;+ y2wspatxxv n 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 the el61pd9 lz1a;cpb sr. 8m w-mgeoob70yhevator has a downward accelem7 eybocr;1-.w lhs agp89 1mb06pz odration 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 scalvx7 vv*z k:rx*l3i(n+mf k9qye in the school’s elevator. When the scayzlvkxr+7x9 n q:*(*3ik vmvf le reads 520 N, the elevator must be

  00.12: Astronauts in aj8,+/ cr 5c9mt nryylun orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Sxv76kk(b: ,is3 4nc/ kt a :p4mujnmvjtation experiences "weightlessness" because7k k4m ,3u :ij/:btmjva6 c(4nxskn vp

  11.10: A string of negligible mass connects an object of mass M=10 k, awr0n1yzb y*g to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trepresent the magnitude oyb0,1 wy rn*zaf 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 ob0/m ;dzhq a0 ;hgkd-ngject of mass M=10 kg to the ceiling of an elevator. The elevator experiences a const dg hahdn -/0;zgk0m;qant 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 surfacits3n djqii; -yh-w6db )qy /,e are connected by a massless string A. They are pulled horizontally across the surface by a second string B wit/ ,d -iiyqndtb;qsiw3h- y) j6h 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 frictionles::ft1n*gdt + ku*jdrps surface are connected by a massless string A. They are pulled horizontally acrossn +f ddk rt1*:*:ptjug 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 air/ 6zr re27o2z d1vja 4 kg mass on a horizontal frictionless surface are connected 7iorzj/62vr 12z e draby 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in com o+sjojp8i ))qxsi1i 4r2,jintact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exertedojs,4) i is+pii 1j8rqm)2ojx by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg areujopg7n; pb8 -4bc3 uy 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, whap8pub-jg 3no4buy; c7t is the value
ofF?

  99.12: Two boxes are acce e0ggjqrqs mj/a ml :/tas5zo0g* (i87lerated 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 foo57rt/a0(0m8 sl g/qg:*q szjeaimgj rce 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. 3svx9umro d;k uy c3,1A constant 35 N force is applied to th9 yo;ku,31v3 drcmsuxe 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 kyt uyu6/f)8pzx7 )t mxr*l)w,b0 g mjattached 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 acc)l uxy7z0kjy8m*,ubgtrfxm)p wt) 6/ ompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5)4xjhtjga:b : q zn 0ohs(p20y kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitu bp::ajq4zhh( jx)og2ny0s t0de of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as sho5ibu *ho vjug .ib57amw46hr.wn in the diagramg.hjb b.rmh6* ui54i7awvo u5 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, in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger box of mass n+frm :yt;zj+o l8v /4:pdzno2m as shown 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 dp t+8o:rfym 4z/+n zlv:njo; μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has0d/8fb) -olmjo0 oyad an initial speed of 9.0 m/s and rises vertically 2.60 before coming b0l- odd/o 8of0m ja)yto 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 re7 4gznhd 4 dzjf ;/1zvizv.m+cst on 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 the distance p+;zj.dgvi vnmd zc 1z h47z4/fushed 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 frictiobmt6vy3 llxvu0b3 i zu-*z6i+nless incline has a gravitational force,a normal force from the incline, and a force applied by a persouvt*6 3il+3bvuyi 6lx m0-bzz n 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, parallel to the incline’s surface as shown in the figure.