96.30: An 800-kg elevator accelerates downward aag2jn1 b (rs/dt$ 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 e8 r3z i32x6q2jh/a.hvm,hkxw n .oyuj levator. At the instant the elevat2ni z3hmk2.h8 a 6j/3. qrw ,xovjxuyhor has 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 ih qlub9dbhr) )tl05s, n the school’s elevator. When the scale reads 520 N, ttl) q,d0)srlbb5h uh9he elevator must be

  00.12: Astronauts in an orbiting space shut6vf p6. ei8 w/ y(gnif(;admeftle are “weightless” because

  06.16: A scientist in the k xop 6.+z*( ir7vunfaInternational Space Station experiences "weightlessness" kr7(u *oa+.ivp f n6xzbecause

  11.10: A string of negligible mass connects an object of mass M* 6.,-k yjmselgyaqo61+a1dkx+ w gst=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 actingqm1sdo1w-ak sg * xjgy+ ,e66.l ay+kt 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 k0hut0,1 aiid-ja 4 aksg to the ceiling of an elevato- 1,at aj iih0usk0ad4r. 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 hodq:o8av*klboq7 /f z;rizontal frictionless surface are connected by a massless string A. They are *kqz 8q/ 7vbao;lf:odpulled 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 horizontal frictionless surfnhx1wv sns dk12c::b,ace are connected by a massl: kwn,1 v:c1xhbndss2ess 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 frictionless surfac9 y;td f 33o)j,ihuyeoe are connected by a massless string A. They are pulled horizontally across the surface by a second strty3)ji3;9 e fod y,uohing 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 frictio km;1iv 1jk8y-xomo) qnless surface. A 36 N constant forc1k o- ;oim kvq81m)yjxe 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.no/6 ilw77p ai0 kg are connected 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 iswn 7l6 /iiap7o the value
ofF?

  99.12: Two boxes are accelerated to the right on a f(5 3 d)ie i czpyw.q8du,ekiw9rictionless horizontal surface as shown. The larger box eq.e,p uw 8iwc( ik3y95ddi)zhas 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 smaller box?

  17.15 : Two blocks X andY are in colfnx+5d/ gqo .ntact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. Whfxgnql/ o+ 5.dat is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massles8;oezin3, q k-bd2pqrfm5uk48xx to 0 s 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 pq,e 502dxkn4k up-r8 ozb mxt;3oqi8fulley as shown in the accompanying figure. Mass m accelerates 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 hung over a friit 18ri (b+fus4sn /e0d ij8elctionless, massless pulley as shown to the right. Wha+nsj0i(8reild4 8ub ief /1stt is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord ande)vt g-v1ril . 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, m2, v1g)ert. liv- 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 w j6m3-:rso .yhzws-(k,b ohi 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(-hhr-jkmwybo i 3 ,.s6o:zws the force accelerating the smaller mass?

  17.25: A box slides with uniy wi*gu1az,(dft fhx3v 0 a0p+form acceleration up an incline. The box has an initial speed of 9.0 m/s and raw+f at y p0z0g*,1udi 3hfxv(ises 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. A04es 9 nnubd5k constant horizontal force of mg/2 is applied to the box, directed to the right. Thben nd0k su594e 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 graf2tf2 4ibdih)vitational 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 orientatiii df)22hb tf4on of the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.