96.30: An 800-kg elevator accelerates downward ai; s g 6vxpfcwor2 j; cj25)tmra*i1-dt$ 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 eleva -oj(l *: o/t:4q 4zbkbmxjftktor. At the instant the elevator has a ofj k btz:*lq4jbm/(- 4xtko :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 sy*takvyheo6-*cywmp 2 gmq to7 1 03a5tands on a bathroom scale in the school’s elevator. When the scale reads 520 N, the eleva3 wt*q 1choat5oy*gv -m yp7myk620eator must be

  00.12: Astronauts in an orbiting spacelt t z zqt/qda5./) s owsj6sa8m0w/:e shuttle are “weightless” because

  06.16: A scientist in the Intu y ) 5oqz8lhq9p 4cqnzs52d(wernational Space Station experiences "weightlessness" ) q85n2upq lz c9(zsh 4wdqy5obecause

  11.10: A string of negliv6qbc/2rm) c wgible mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward6rc/ wmc)v2 bq 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 M=10 klj0ii n( .tnl;x. w7ah0lcx0kg to the ceilnl;il7xxciw. .( kt000jl haning of an elevator. The elevator experiences a constant 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 fricu jiqt-k0:g0h5eob8q hr r.-9kqxfn8tionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a cf: 5kek0-tq bnxi.qq0j8h- g8 roru9honstant 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 msyvp w i2cerg62, ;f1wass 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 accelwecs;2wf6 , gry2i v1peration 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 mass5mrheb n.6jr 5 on a horizontal frictionless surface are connected by a massless strihm. rr5en5 j6bng 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 nr/j+s83+di*h+aguhc - nsak andY are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by X onY is-+ c3/jk8n+s h+d*isnag r hua:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string k: hew*zy z:g h2,g3qiwhich has a tension of 2.0 N. A force F acts in the direction shown to the right. Assumin,hgg:h: *yeq kizw3 z2g friction is negligible, what is the value
ofF?

  99.12: Two boxes are acd g h+r1ue:0c t6v5oyfcelerated 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. I overdcgh 0yft15:u6 +f 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 ayt:z w7eid (h( frictionless horizontal surface. A constant 35(zei:t(h7d wy 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 masshg(40v6orji s ):rnmrless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictiov)s 04r o:grin jmh6(rnless 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 l* 90rwix ; )fb+kofbe+f pfr3+;sfl hends is hung over a frici0psl h*+rxkfo 3bf lr+;f;e9b w+f)ftionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 agmwbq+n9fwim4, dsa9zn4k-r, 9fb j*nd m2, 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. 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? 49q+wf,k-fbrb9gwzd, ni*4ja m mn s9

  02.42: A small box of mass m isplaced on top j6xw nlyd9*/w((zux qof a larger 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 would be the force accelerating 9 xu(j /dnwwqx l(*yz6the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box w/u uba:2p+dohas an initial sabo 2w+d:up /upeed of 9.0 m/s and 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 horiq(1ec 6 3w) s nlfw*setlrp9(h74azwizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. Thelf()1 e6 4(7c*h eql3tizw w9rpanwss 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 gravitationalajny i1vg (0l2e4) zae 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, parallel to the inclinelga4 a(njiev 1 )yze02’s surface as shown in the figure.