96.30: An 800-kg elevator accyf4 xcb )9temko*p *.nelerates 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 elhd.uk:j wnfoo 40o)(z)j: wuwevator. At the instant the elevator has a downwakj4u()d0 )oojzho:ww uf.:w nrd 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 s 8r1u(p4si 2,dq xxbmbcale in the school’s elevatorb pb82qm ,1iu(sr4 dxx. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bejcl vdy-skv 5ab 547h9sc79qdcause

  06.16: A scientist in the International Space Station experiences "weightq2mhc b2g51.z7lvbrk sy-c2 (dh 5vjelessness" b2g h vdscq2l-ejv.hr1 bm525 (zc 7ykbecause

  11.10: A string of negligible mass connects an obfv+9ej9 2owpcject 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 grjpoc 2few9+9v avitational 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 kg to theeff*4d,n q0 fa ceiling of an elevator. The elevator experiences a constant downward acceled*nfqf 0fea,4ration 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 horizonm7x 9w s0 .52ba-;jrd wdmp4gwte *aeqtal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a sec.m2t 7e *mw jd qr5exd4wba90as-g;pwond 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 ezjy3g8,c c /gp.ytq (a horizontal frictionless surface are connected by a mas,gqcy(pjzc.g8y3 te /sless 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 kg mass on a horizontal fricls3vd3 jq7a +kras26 ftionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B wi a3lk7 qd fs6ra+j32svth 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 wfxfn b**5j p4ba u,r.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 exertedbujb,5.a* 4r fnx*fp w by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are conn 9s/msz;qeo (tected by a string which has a tension of 2.0 9s/z;t(mo s eqN. A force F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictiev53n8rf p7m;a1bc qt onless 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 pull on the smallc; 5 7a1vfepbt3m 8rnqer box?

  17.15 : Two blocks X andY are in contact on a fro ,ybti9/gak.ictionless horizontal surface. A constant 35 N force 9io/t . ky,bgais 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 massless rope is attachedm au,m:wdx+ 0b 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 acc wambu+mxd:0 ,elerates 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 hungcw.)xk fjp -7d b r:-qk2 cau1hxk,u4h over a frictionless, massless pulley as shown to the right. What is the approximjuxdhrq2f x41a ,c)u-pw kc.: kb7k-hate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are vrw/- zcdo t8o 0f7i,dconnected by a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictio,8c-d/ f0d wrvotio z7nless 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 on top of a larger box o muup(eng h7jskflm.1. h 10 v+6qv7jof 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 fri7ulp hj.(6 eh+ u.0qfg1kojmvn vs7m1 ction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform ld(u*97agbd:lm uwc ,feb/ ) dacceleration up an incline. The box has an initil,u( :fum*7d gda/9)b wdc lebal speed 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 resth3+leo *7 m u8puv-odw on a horizontal surface. A constant hori8owe mp o dl*uu+3h7-vzontal force of mg/2 is applied to the box, 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 i-l:j3wuur8/shgx t; 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 directe hlr: g3u/8ti -;xwujsd upward, parallel to the incline’s surface as shown in the figure.