96.30: An 800-kg elez5c5 spt. bse6vator 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 thenztllq :oz7ez,56l 7o 0 q4zgy elevator has a dow o lz6zy5lzql74z7oq,n: t ge0nward 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 mys y;)/5se :jw3* o0wwca4nxuw a(gga bathroom scale in the school’s elevator. When the scale readj;y x5yww:4m *3/( 0 ages)cgan wuwoss 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shr9mn 2sp :wbf ixj*3yg4r 48umuttle are “weightless” because

  06.16: A scientist in the International Space Ssvtrp:f */co2tation experiences "weightlessness2c:/*ptfsr o v" because

  11.10: A string of negligible mass s*z. 7jvk( kqj13*b r4sjwljrconnects an 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 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 betwe* srjkkj 4 rj3wjl. s(bz7*q1ven these forces?

  12.10: A string of negligible mass connects an object9p)vqol lojmq r.d8,: of mass M=10 kg to the ceiling o v j),.olrqqm89pol:d f an 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 kgl4 w e:9iji .ghwo-,yw mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surfaci, iw.go:-hjw l4ewy9 e 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 3 , vt(dr,1otu/qq30ekyioo fa horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string Bqt ,oioed(ok,yt 3fv13qr0 u/ 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 3-fx0ehne*j lmass 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*njlf-0 ex3he 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:4 ( ;uw9pth pd1m lupe)oxc;oY are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the e1;xtpmp dul c9ho 4;u)(pw :oright. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg andax kg2v+ d m eumgvp6q:1;2+r5m ;ues)z+j nif 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the ds+5f +jar 6gn2puuqx;m e 1km:m i+;2evvz g)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 frictionless horizontlq wl */kkp;x1al 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 smalle;lx qpkl/*w1k r box?

  17.15 : Two blocks X andY are in contact on a frictionl0xbep *sx9)ytess horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitx0*xp9sb y)e tude of the force that block X exerts onto blockY?

  94.25: One end of a masm) c1cy ,o9.yon;os qpx xep(2sless 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 accelerates downward 12xsn 9,)mxo .cy pqo(poe;ycat $5.0\;m/s^{2}$. What is m?

  97.30 : A string withxtw/ zotha2* 7n*m,p l masses 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 magnitlz2n ,toa*w7t */ xhpmude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as showny:a8:/m 8z u;pmgeibl/vo9mk in thep9movk;a:/ i8ebg/zym 8u: lm 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 known?

  02.42: A small box of v* tn xykx 6fr-6bp5m4mass m isplaced on 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 friction between all surfaces is μ , what would be the force accelerating 4tyrx kp b6n5*v-m6 xfthe smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box s0y-h5 /m nxfohas an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the i -0noxfhy5s/m ncline 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 constant j*e.nmkt.h0 bhorizontal 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 hmtk *e .bj.0nas $μ = μ_0x$ 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 gra qiy:t0u jp,, ai yyh7vwq9m01vitational force,a normal force frmj0 9yw , 7i hiqtyy,1:p0auqvom 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 directed upward, parallel to the incline’s surface as shown in the figure.