96.30: An 800-kg elevator accelerates dsten9:loge f:2 kj th. , gzy:)su7tv+ownward 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 eltd5q0bta ; f ltt2 .bod)5nvj3evator. At the instant the elevator has a downward d jt3t b55qo t;bdt20vfln)a. acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing c*rmatkc1 y u-r: )de0500 N stands on a bathroom scale in the school’s elevator. When the scale reads 520 N, the m-yukc1 r0ar e:)tdc* elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weigcai9hhi+3ts (ch:l4w htless” because

  06.16: A scientist in the International Space Station ex( m58ci7j7ihn ,kj pqtperiences "weightlessness" bij, n7tq8 i (phjck7m5ecause

  11.10: A string of negligible mass connects an object of mass Mj ()cya3swbce9,wr ;w =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 magnitudea;bc3(,) ws9j cweyrw 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 the cxni+i1ut 7h; edloe1jtdh .9 4eiling of an elevator. The ee94h;1d o1 nd7uxt i+h.eil jtlevator 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 7y30 owh1xa:i-0fz92gj) hxf:ffgd sxqlfl ; frictionless surface are connected by a massless string A. They are pulled horizxxx7sf3f;:0 )qg ia9yofl 0h 1f2wj :hdl-zfgontally 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 ff(s*+zhkw5a da 6f aj-rictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second stri5*jdh k 6 +aas(afz-wfng 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 surfaceub c:s 65- nlu(drdxku/s .,g+ ctrf:h are connected by g rt,+l5 (kr/u.xb-c u cs :u:ds6hdnfa massless 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a hori(g1l)zsm)07 mb6ssk jl cg 7rczontal frictionless surface. A 36 N constanb 7ls)(gssrkz)jlcm g107c m6t 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 are connected b37 jo/qxs;k)layh c -wy a string which has a tension oy7cs )k xa-/;ojl3qwhf 2.0 N. 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 frictionly:, n+:q , 7goxbntkkgess 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 +7 xk,nntgqy:b :og,kdoes the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on* alv*6 uow ad 3:*mtqqplx4q) a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of thpqqmdx 6uotl*a*w vaq: l43)*e force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other mzo n6o63eu.6i.txn+p gyn/uend is attached to a mass of 1.00e. ux36y6 o6igmun o/t nz+pn. kg. The rope is hung over a massless frictionless pulley 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 k:0qmg(wr:f ,l/uj vs frictionless, massless pulley as shown to the right. What is the av qw (: lrk/j:sug,m0fpproximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are co.5f sr3qbvj8wk dn7i1 nnected by a cord and 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 m.15i3 7s fqdn bvjwrk8ass, 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 largevrk;ej +*q pu0r box of mass 2m as shown in the diagram at right+qp ker;uv*j0 . 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 uniform acceleration up an incline9lkapu:xdk is-x hr,0s;d -r). The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the incline is d r-d:s0ra) sk-lxhu k;p,x9i$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass 1it1:da; vc muayn4f)i(a3 :jv ck2zvmis initially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes wita v i:jkyv3;1u1iccn(a: 2fz)a4vt dmh 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 normal foj. ca)n5id el6rce from the incline, and a force a6l aecnjid.)5 pplied 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.