96.30: An 800-kg elevator acce+wrvaakqc2chh5c.-yj6 ki)8 u,fdt7 lerates 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 eg1ct l bvj4708w:ntbgjr/5ra syh 5n;levator. At the instant the elevator has a downward accelerativ: btcg5tsyj0rh5a; 41wb7rnn l/8jg on 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 scamj wr tt8yc,36le in the school’s elevator. When the scale reads 520,tmt 8w rjc6y3 N, the elevator must be

  00.12: Astronauts in an orbiting space shuv8xcg w 3kr6is ( n,xyz)f71ccttle are “weightless” because

  06.16: A scientist in the International Space Station expec0 cxbyd:5/rd5t0 cay;rg gm *riences "weightlessness" bec0dyt:d r cg 5xa gc/5br*0m;ycause

  11.10: A string of negligible mass connects an object of mao9ai(mi7w/gn ss M=10 kg to the ceiling of an elevator. Thgm wa(i7o n/9ie 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 between these forces?

  12.10: A string of negligible mass connects an object of mass M=10 kg to the)le-- - *xl kc9oc 81sadhxqhe3 r6fcn ceiling of an elevator. The elevator expexx-*d cnhl 98e -sk6al rqcehco-f31)riences 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 pnn 3a jj9x7)(qwrrkhh/)uj ;z: g(yc 4 kg mass 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 a constant acceleratiop: g h)j9 juwacyq(rn k)rjz3x/(;hn7 n 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 frictlbeqh(09i-(tkoam a( ionless surface are connected by a massless string A. They are pulled horizontally across the surface by a sb-( (qilk 0e ha(tam9oecond 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 kgquz ( ako:1,bq mass on a horizontal frictionless surface are conn:oq1 u ,(abqkzected by a 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 iizw.p wh i6)9j(qjz(+gypod ,0o+gs andY are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by X onY o6(j ij ih 0gspgwy+p),+owiz(.q9dzis:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string which hf(lmuj9 sbnx. n-*jl (as a tension of 2.0 N. A force F acts in the direction shown t-.ljx(nf s l*j(m unb9o the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the riyu8;j:.oinxw)g 0dti ght on a frictionless 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 does the larger box pull on the smaller.:8 tin;j0w )yg iuxdo box?

  17.15 : Two blocks X andY are in contact on a frictionless horizif 69/*.qq3 xsua vsnnontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto v sxqs.* ua 63/9fqinnblockY?

  94.25: One end of a massless rope is attached to a mass m; the vh yb;pk56cv+1.ke sta0alx9other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying x06;s .ybkea9vh + 5ak1cpvtlfigure. 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 q8aki07as;vzh p -+ ea;o6rhq frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masseshr0ak oqi;zaqha7p + 6ev-8; s?

  02.36: Two masses, m1 and m2, are connrks(rhaml-4 1(4zun oe9 *hcaected 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 mass, m2, if both the sliding mass, m1, and the tension, T, in the cm( lea* nrsr9o a4hcku-(z1h4 ord were known?

  02.42: A small box of mass m isplaced on top of a larger box of mascg:j+eihi zr5* e, 3vks 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 surfacese,g + 3kvjcr: ihz*ei5 is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an in l8w1le 0jhmd1itial speed of 9.0 m/s and rises vertically 2hw8 1ed1m0 llj.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 suxan1mm9uuj5ur yx 3qws2 *h,; rface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surfm;auuu 1q *m5 x9syn,3rhxw j2ace 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 forch .w l.i xz:4szb:g-tve,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 olx.:. zz-:tw vgis4h bf the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.