96.30: An 800-kg elevator accelerates dok,qiegoe1e*t mw a)/3s.rvrtte,n5( wnward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands e s(zp1 rr)f h5:zjp2uon a scale in an elevator. At the instant the elevator has a downward acceler rj2s15:r(pu he)zpfz ation 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 oym-i4o/ fsd 7school’s elevatoydo4 /-ims f7or. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “wezi+ovv 9qbahxmf*, 18 ightless” because

  06.16: A scientist in the International Space,x+uk e ei:b1 vblt+n9 Station experiences "weightlessness"i 1kvb++b, n ex9ute:l because

  11.10: A string of negligible mas p1c8i4jd36ykl 9gxjl/efu+i s connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed 63yp8g /1ic+ldf xlui 9 jjek4of 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 between these forces?

  12.10: A string of negligible mass -4sd .mbrd deu 6rcch 3t.5th)connects an object of mass M=10 kg to the ceiling of an eleh.b d4sh ccd6-).3 trmerdt5uvator. 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 horizontal frif/h *q) bjosv8a4ap-omwk2 7qctionless surface are connected by a massless string A. They are pulled horizontally across the surface b fb*k8 4jpv)s7m awho/qq-2oay 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 horizontal fr p+)3a,paaw,:ie4oat*j kfbm ictionless surface are connected by a massless string A. They are pulled hori+m4 )t ak,o*papafj,wa:3 ebizontally 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 t4tdwh9c(rs :kg mass on a horizontal frictionless surface are connected by a massless string A. The9 rchsw:t(4d ty 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 /h 2ual7/ 2s43f qeg3i-t wkwt zsdk5h+dr/ggare in contact on a horizontal frictionless surface. Aq shd/fhg rge25t34uiz/w3/wkka - 27 s+gtdl 36 N constant force is applied 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 /hv2 yg1d8 iucare connected by a string which has a tension of 2.0 N. A force F acts in the direction shown /8ic2hu1gv dy to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictione62 b+e/jmvm jtx,ars7t3wpx 0 sq)t8 less horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilograms. If a0/8+mvw 7e3axxjt) ptes t q2jm rb,s6 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 fz ml9hzno 95 mcgzv c5j166u5orictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that bm6cu9n z9jz o5l m5vg16chz o5lock X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the othewmv eul5/1hr. r 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 accelerueh5mvl 1/w.r ates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of fdv+z p2( dk4wum,dy7 o2zo 0u :sob-n1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerat:+bo sz4oy, d w d-u7u(pf0oz2nmvkd2ion of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as shown in g19b /u e4y)qu6gmt;y*/oyeukj )1x tz kopz1the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictijgy)k* otz x 1gupe1/yqoye649 ukt;/)1 zmubonless 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 of masskdc(noihz/sj v+l 8/x :jb+ub1z8 kk- 2m as shown in the diagb lszj++k8kzc ibdu/ (x/ho8j:kv- 1nram 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 the smaller mass?

  17.25: A box slides with unif6(yodhc0dx .4a8 uptcorm acceleration up an incline. The box has an initial speed of 9.0 m/syt0 dcpx68(c.h aud 4o 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 rest on a horizontal surface. A constaqxbv u ni.or9l6)g5v4nt horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface chr)5nubxi46 .goqvv l9 anges 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 frs3az 0 tpxzy1.as;h7tp y1ra /ictionless 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 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 dire1asz/1sztar7yp. t0xya ph ;3cted upward, parallel to the incline’s surface as shown in the figure.