96.30: An 800-kg elevator accelerates downk-eil7 (k30bs2 cfcmiward 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 v ((vj :xwnc(fza-/dl elevator. At the instant the elevator has a downja(dvlwvx/czf: -(n(ward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 509it0j25j v/ mv6xeuq l0 N stands on a bathroom scale in the school’s elevator. When the scale reads 520 N, the el/qvv2ilmu69ejtx j 05evator must be

  00.12: Astronauts in azf/uf4(.lnb3)y(kkhkq d* p qn orbiting space shuttle are “weightless” because

  06.16: A scientist in thmcku:k)652 eewrtf4s e International Space Station experiences "weightlessneske t46 w2uk fsm)e5c:rs" because

  11.10: A string of negligible ma3tsrl 5 w 1ag3l3a7uggz t/y;lss connects an object of mass M=10 kg to the ceiling of an elevator. The elevator exyt 3g7ul 3ta ll 5/z1;wgsag3rperiences 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 )lp( yh uz6aeblu75 1pM=10 kg to the ceiling of an elevator. The elevator experiences a euhl1)zu(5 ab7 l6pypconstant 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 surface are coa3pc+o q,da ( nuel(5rp8koj8nnected by a masslesa 83j(nl ad5rep,+(opuq 8okcs 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 and a 4 kg mass on a horizontal frictionless surface are x gd5i).5u g)jkyw czxqj33c0 connected by a massless string A. They are pulled horizontally across the surface by a second c .x3 yxg)gk3 d0u)5qwzj5cijstring 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 b+s mh8);aslj 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceler lab s)sm+;jh8ation 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 frisr*b r6 al-9ks : k6l3uzlay,rctionless surface. A 36 N6r ysru,ks96:k l-*azbal3 lr 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 are connected by a string whj;ex8 o nq onl55zmt+0;fg ji*:/bddxich has a tee5ob8:j 5lj;;nd gxx0o t+*dnz mqi/fnsion 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 acceleid 7pw6td a. (xzng0.arated to the right on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box hawi.z nd(p 6dagat0x .7s 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 blfj71s xz50+f5v2 tktit/ mg pih /u,contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. v/bifu5m5 ist0z,1jgt2t pfh/ kx +l7What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a .o 4 cc37bcz kmih8/ddmassless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. 3dc cz 8/bmoick.7hd4The 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 itftxe9t3y5tl(g c /q5cys jh30s ends is hung over a frictionless, massless pulley as shown to the right. What is the a(g9t3/35x cy0l jtqfth5cy sepproximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and md.hy+6) m ebsm2, 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. m6 s+bdym.h e)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 lar dv)hf.wzy.3o;d zo.) mf r3qiger box of mass 2m 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 μ , what zo)q.f)v mz.d 3y.hrwfd;3 oi would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an iniqf9qri,q63g fzqt/z3 b;5ojwfm +j.8s s+ ra utial speed of 9.0 m/s afqmb 3qsq9r,urjsz;+f8zagq3/ wj i f .to5+6nd rises vertically 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 constagr*ztmm2/i:l ngp f m r*k)d88nt horizontal force of mg/2 nzr)plggd8 *mitr: fm2*8 /kmis 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 frictionles3r;m( zw6wptlusyelm1/- c+d 95ngc hs incline has a gravitational force,a normal 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 force by the person? The +x-axis is directed upward, mzrlm3(p 6g1 tdls/-cyu 5nh w+ewc;9parallel to the incline’s surface as shown in the figure.