96.30: An 800-kg elevatkw0cf xb0q4.( pd t3dkor accelerates 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 the instant pwy:kr r4 ; sdq97ftz3the elevator w479 d:kqs;p3y frztrhas a downward 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 the schqw,;9k ;xveot,xp ux0ool’s elevator. When the scale reads 520 N, the elevator musxu,0k txwe 9o;q,pv x;t be

  00.12: Astronauts in an orbiting space shuttle are “weighto -qiid:on 69oless” because

  06.16: A scientist in the International Space Station erx . q2d)uen.lux6 kjr*py5m5xperiences "weightlessness" beca6.mux* npj )r5kueldqx r.52y use

  11.10: A string of negligible mass connects an object of vi,zhqvhk7) h1s3jl/ 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 kh/jv hsi1z) q7h3,vl 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 +7pg hw: ;opu2 rwlc-6joboih x5ap..connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences aw2 g.;ch lprjpu-w o7ha obp5+.6io :x 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 horizontal frictionless jg u9l n1647eghy mm+bsurface are connected by a massless string A. They are pulled horizontally across the surface by a secon6g jhmu7e+4b lgm1y n9d 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 horizontal friction.u)ui gv+hzfq 91keq5less surface are connected by a massless string A. They are pulled horizontally across the surface by a secoi g)qq hvuefu1 95+k.znd 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 frictionless surface are conn i,osx+24 kvywiz k3s8ected by a massless string A. They are pulled horizontally across the surface by a second string B with a consta38sksx +2wzyko4i iv ,nt 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 frictionleswx,uxk zg5u 1:s surface. A 36 N constant force is applie1k:5 ,uxwxgzu d to 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 con:45df322 jk3ksrve6mfr;c i wuun;q mnected by a string which 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 :ff 2mq2urr vsmi4e c5j ;u;d3n3kkw6value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal surzq(n a3mwumo(v3g7; oface as shown. The larger box has a mass of 9 kilograms and the smaller box haz(7(oma ;3 wquvgo 3mns 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 smaller box?

  17.15 : Two blocks X andY are in contact vvjwmv.a-vn8)rt j 2rg-( r7t 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 blg )v atmwn7vr(rj2-tv-rv8. j ock X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other end is1m j,e*v a4jjm 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 accelerates do 1mj4mj,ja ev*wnward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kg and 3.0 kuat m* g2z0t)5 v( *lcbzq hkxuy42gko*,1yrdg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masseg tz*t vo(b*c2k,0hku2lx y 1*54maz ) dgyrqus?

  02.36: Two masses, m1 and m2, are connected by a cord dqzy8m6sg (o7pw 4; sxand 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, 7 sqwo(mpgsdz x846 y;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 aes kzc3 h5n; gv4zutvt6+r5k. larger box of mass 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes actsu6vrz; +en4 gt3hc. kk5v5zcelerate 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 acceleration up an,c kvbxn 48k56spzw cs:ocx b(lp9.8g incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the an5,so bn:gx .pbcz9w84c 8 (kpcskl6xvgle 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 ch*8snlh iw9*2,nle.rtz 2nnrest on a horizontal surface. A constant horizontal force of mg/2 is app lze h9c.rn8t 2,i2nwn nl*sh*lied 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 force,a norwz 7ecl:n r/r71x(hl pmal 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 an 7/l(1lr7pwxncz e:h rgle 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.