96.30: An 800-kg elevator acceleu. ue30qpmt4mhz/; s frates 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. At th)*nkh8sdnv r0vc u 5xxa2 x7e*e instant the elevator has a downward acceleration of8adx r5hex)*k v7n2 xc0s* unv $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a bathroom scale in the sc )h03wx rexhu5z; :f,mse*bcca -v6 athool’s elevator. When the scale reads 520 N, the elevator must beabz3v6:the 0-ux s*cmh f, ;5xeca )rw

  00.12: Astronauts in an orbiting space shuttle 5khrf:6 5wc lcqq:,bn( 6blmj are “weightless” because

  06.16: A scientist in the Internationalx o;14rgxc i9h Space Station experiences "weightlessness" be9;xigx4 chor 1cause

  11.10: A string of negligible mass connects an object of mass M=10 lj yf49y9sa9wkg 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 Earth acting on the mass M hanging in thaj w9sy f4l9y9e 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 mass1/u*b)68q+ hqziys i nkj at0x connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downwit)1q0*bn+ qh / ua8xzsj6iy kard 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 um,q i5l .eg0yconnected by a massless string A. Th,e 5uq0.my ligey 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 ma:j kga ; gzy,u:2(bvmiss 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 2 ; ka ,gj:vgu(i:zbmya 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 kg mass on a horizontam q: lqv)/rm0a7xs.s nl frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B/a qxml) 0r qsn7mv.:s 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 and w./jqjfs6s4 zY are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to thezjs jf6.qw 4s/ 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 strin:.f-ijk5ww . 0xpevsa a:ec*ffd,( mgg which has a tension of 2.0 N. A force F acts in the direction shown to the da:x.k0wfwgvfpef j*m(5a-, i ec:.s right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to 44 w:deovysj/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 for:4ve wdosy 4/jce 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 surfag8sq4 wp/jlr-kpzh-*o7)w e g ce. A constant 35 N force is applied*p-7wqhswg)kr4 j lpz-/8eog 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 rope is at0n /.qeipz.1l u55 z omvfy0ektached 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 acepvynu1 0keql.z5mi zo.0 5f/companying 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 onml:g/7jkh*3plsw. jm kyo p ;0-pgyn, its ends is hung over a frictionless, massless pulley as shown to the right. y;sp,g -polm:/hm yw0 npgk7 j.kl3* jWhat is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, vzedq0e ,joe,7/t*gam 3;kl y 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 kv/ e*e ,zkyejdm,t; 3q0g7alonown?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2hg j:umi9l1( lm 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 ul :1(lih9mjg of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. Th ytt q:sp *bom+uid 7/;oo(o8ke box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming * p yibsdtk o:u(ooo+/;78mtq 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 con0k 5 ibelo3;mf qusdxi/ v57*wstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of tdqex 5i3*bu0violf5/;m swk7he 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 /j gwpt v 8(d+zri9.qmnormal 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 countercl+j /(qmzw8 9ig.rpd vtockwise 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.