96.30: An 800-kg elevator accelerab b7f j2t1 .cpse(0oko m4r x.m.mg1mrtes 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 elevator. At69 xewcdf*7hw.fppz5 the instant the elevator has a downward accelezxp.9p5 c hdewf*f6 w7ration 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 scale j2eqenem .468 -tw s3wzfgu,vin the school’s elevator. When the scale reads 520 N, the elevator muz,ft4uvgesw n8 m6w.23jeq-e st be

  00.12: Astronauts in an orbiting spacesnlw3 +z8ff*3tt og/u/lp4 se shuttle are “weightless” because

  06.16: A scientist in the International Space Station expe1orn4 e3h8fnd riences "weightlessness" becae3r1 4nn8 hofduse

  11.10: A string of negligible mass connects *ywlh m x/ak7ie5yr *7io/9usan 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 Eart*sho */xwil7/ kia rmy5 u7ye9h 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 negligibla 6rs bs,vype71)nz+re mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downwayb, 76 rr pn+ez)vss1ard 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 frict+vajf.85t)+p i/ guiuf bok 3mionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second strvk53uig 8bfm/fp . +ao)+u jtiing 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 cogoij 3qtb 5-g9tv a45lnnected by a masslesto5 -5it b3av 9gjglq4s 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 A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 ks xc;m op:i9 ji+ajfbbc/.u(mrf b+29 g mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across t2ifum .p i99+b(/j; ajm+osbxr: ccfbhe 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 inm7*/i dot, pnb bkh:1g contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to*dt mp/b: h,7bkinog1 the right. The force exerted by X onY is:

  97.31: Two blocks of masc zydbeo-0da xafl .-86nys5qnj.u: ( s 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming frictionn 5cfb.:oyld(ej6xdn a0s -az 8-u.qy is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the rqza84r wm3e ,eight 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 force pulls on the larger box, with what force does the larger box p qza w,eer384mull on the smaller box?

  17.15 : Two blocks X andY are in contakve4+r0.n exl ct on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that bee+ 4k0.lxnvr lock X exerts onto blockY?

  94.25: One end of a massless rope is attac nu z,6khhhq 16tl u3tb(rd;r8hed to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frhdbt8h(u,t6 qlz ;rnuh1rk63 ictionless 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 masshm,n gp vj;b aows/5+4es 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 the approximate magnitu h;v4n jpwa5s/ b,+omgde of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrangdm+bou(iu f(74h 6zas 5 1ztreed as shown in the diagram with m1 slidinreod65a bz (ih7us(m+z4 1tfu g 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 onk9r5t+ udt*9nplp do . top of 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 td u* 9ntl5or9.dp+kpfriction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform yc93re9d btu 2y i74apacceleration 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 angle of the incline isbtyr 9ue4yp92iac 37d$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initially at restkg yvz/pdd- )0:fyqqc6bf(x - 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 gq(dz6bvdq0 --fy kcxfy)/:pthe 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 hh(hrm qy *j56+roty6has a gravitational force,a normal force from the incline, and a force applied by a person that all are equal in magnitude. The mass rem r myh6jht 5oyr(*+hq6ains 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.