96.30: An 800-kg elevator accelera;bf* ;vwil )attes downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg studenau0 2rc8hk3ux xm4dy: ,yagv tu (4)ort stands on a scale in an elevator. At the instant the elevator has a downward(:h30,r uxd 4) kyc yuv ogu8rm2a4txa 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 stands on a bathroom scale in j5*+ 3 z7c-,hha j4fkidmo7dy:z wiylthe school’s elevator. When thejf :k ozwzm-y,il*jyc7i 5ahdh4d 7 3+ scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbitin, wrq m5hb6w7hg space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightlesskr e 35i7va+jmwd13ijut0 )xlness" becauseljd0v e7irx5wma j t13u3 )ki+

  11.10: A string of negligible mass connects an object of mass M=1 j7 kb;+b rd09pias-)n dohcbq-./xov0 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 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 betwe0- svk;/ad- pb obbjid.)+ohrq7 9nxcen these forces?

  12.10: A string of neglm7ftx47by 4wcm;sz+4tn /owiigible mass connects an object of mass M=10 kg to the ceiling of anmf tc nw74/yt+zw4;s7imo x b4 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 hojhu0;+qy- t.k et sbhw0 (*efqrizontal frictionless surface are connected by a massless string A. tbh ufqjtky. *;(00qswh-ee +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 )og7 h*/evnnv*ihp;r horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the v7 h ;n **)invpghroe/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 kg mass on a hor w+uf 7bv24dr)twx,ghizontal frictionless surface are connected b7uvt wf)g2 dx4 w,r+hby a massless 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal fricti9r0vm-spk 7q cy zvj(;4o.efp onless surface. A 36 N constant force is applied t.0 kvfy9o-sqrzjp4; ( e pc7vmo 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 which igw// 78morexwaw2 +p ivnc3:has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what is the rnm/cx 7 ia3g8vw2/+i:peoww value
ofF?

  99.12: Two boxes are accel)snp ys-.fjd- qro 07ferated 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 kilogramdrp )-0y7-fjq n. sofss. 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 contact on a fricuki8s8.k bo3jk bsd34jy s /,r7fx/r otionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitu7/skodbjk/r3xs 8fi3.k8b 4y ,josru de of the force that block X exerts onto blockY?

  94.25: One end of a mn ud -lc,o1sogkj1tqle;;w5/1 o0esbassless 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 frictionless pulley as shown in the accompanying figure. Mass m accelerates1l1cegkbo;-,e n sj osqto;05 /wdl1u 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 ends is x7he4(:nxx(8 vag cay hung over a frictionless, massless pulley as shown xge7xvah( ca4(n8 x:y to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cordsy4o wd 0nbu3*qzd1(o (m,(8ynrcjs o and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulley. What woul(m3*yo0b syq(dscnuon(4r1 ,d8 o wjzd 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 rjca/i)3q sjcif3t57a larger box of mass 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes acceler 5c3i ) r3siqajctj/f7ate to the right with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform accea7c3p:da jx(6sg( 8t*omqgqoleration up an incline. The box has an initial speed of 9.0 m/s and rises o cj x(8qggs*am3oa7 t :(pqd6vertically 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 ztel2 +fx k+q0rest 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 the dist+tx2kz0f le +qance 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 fr;l5f3 j/dw(r(qv6 smems 6r tgictionless 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 coun/6vr35l6gw; (srtsjf dmmqe( terclockwise 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.