96.30: An 800-kg elevator accelerates dow x ..xq11wsuhoea mxsm,- imu k6a84o4nward 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 scab6tit+4* harr le in an elevator. At the instant the elevator has a downward acceh+6r4ar it* tbleration 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 scplla0 38nw zo88a*miz ale in the school’s elevator. When the scale reads 520 N, the elevator mu m0apoi38 z z8ll*na8wst be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bemh h gxsrxp (0z+96ll(cause

  06.16: A scientist in the International Space Station experiences "weightlw,8c :myr3t l0 lzdtd1essness" becl, d3zwt m01yldcr: 8tause

  11.10: A string of negligible mass cy8qgn1.+of1 )vqvy kv1 1pcrhonnects 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. Legvr1 y+yp) h8q1fko vn1v.1qct 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 kknt,,; 6z(pmi .6hr; 7kkvusq qydcv6g to the ceiling of an elevator. The elevator experiences a constant downward act;zry v7(kcs.p ,hi;k6udvqkm 6,6 qnceleration 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 s 7tz b *e-1zsatw6g* ;ifxcl9qurface are connected by a massless string A. They are pulled horizontally across the surface by a f btizq;ec **lz67w a-1txsg9second 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 3v zj1ekqz)- zn 0am6xmass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the sk zxq)1z36j mnav-ez0urface 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 kg6ort n fz4g6u9hzp*y 6 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 acceleration o6pgo nr*466zhtu 9f yzf $12\; m/s^{2}$ .
What is the magnitude of the net force on the 2 kg mass?

  96.33 : Two blocks X andY are ipm) 3mow m*j/49sk 7o6ou uhm9akee5hn 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 onYk37jwmehooakm549u /m emou)9 *6ps h is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are 4/s1u7-fnt sd2alr nra9 pt( yconnected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction 9d42 t(1 tr-ya7ls/ufrpa s nnis negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horiz oy78x o:iw(vjontal 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 force pulls on the larger box, with what force does the larger box pull onw7y:ovoixj( 8 the smaller box?

  17.15 : Two blocks X anvqel,lne84,.g 27 9sejf fb dddY are in contact on a frictionless horizontal surface. A constant 35 N force is applied 7e.vgfenb, ql9e8 dl4j f2d s,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 oxyml8j .+t 0wrope 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 frictionles0+.8tolywjm x s 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 an vl k* 7l3a f(+pa4w,yjlrygykc)13tad 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration7kv3 4 wfy* ) 3lrcly1ta,l +ygp(ajka of the masses?

  02.36: Two masses, m1 and m2, are connectedu1 (7saov (tjf 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, andjov(t( f7s1 ua 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 2m as shown4ox -fyd*5qhvjb. h7uc*2tcnyqmv; 4 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 wouldt u n. 447*qb5 yj -2d;yh*xmchcvqvof be the force accelerating the smaller mass?

  17.25: A box slides with uniform accelerati0,v dyz8ir)gw7gvx rn/6xgr9 on up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the ang gr/ v 8n di0rx,7z9)6wgxrvygle 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 x y0g1xlw;8 ceaojnif06ul: 8at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the bolu 8 0:nl86xj01icyw;g x aoefx, 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 frictionless incline has a gravitational force,a normal f5 8wy qtlpkl-5 uof)z0d+(pnforce 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 persopyndl)u 0k5 z(- t+5f8o lqfpwn? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.