96.30: An 800-kg elevatd9/uf9 qiahhpp kx j9/b6 9d/nor 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 ins*q u(z7zzpo zzep+wo 6 fa)25htant the elevator ha2zuewp z+76p)*h5(qozfo zzas 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 age5* -od5 nnk0s7 mbp500 N stands on a bathroom scale in the school’s elevator. When the scale reads 52npo5e70n - kdgm5*s ab0 N, the elevator must be

  00.12: Astronauts in an orbitingvjg0r/thw- f/7 9vebev ipx:1r o1kk- space shuttle are “weightless” because

  06.16: A scientist inf : 32rwud;eon the International Space Station experiences "weightlessness"2un wo3:rf;de because

  11.10: A string of negligible mass connects an object of mass M=10 kg to the .ys y7k91 oyfqceiling 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 eleqysfy91oy7. k vator, 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 malve5+giicl q4w- xoj(1c82j kss M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward o (xl1c-c j45q li+gjw2eikv8acceleration 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 az.ti- d7-fu jpnd a 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pj7d i-tpu-.fzulled 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 horizontajt,in9-a6 ,s7b. z w 7 vi)nbimtgao4el frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with7 tja7aii6zbsvginn4)9 - eo.tmbw,, 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 sur3a8:a fp7lq-pfgkwx 3 face are connected by a massless string A. They are pulled horizontally across the surface by a second string B wxlkq3 pp8fg:-3a f7awith 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 conta)v /.5ri3x;d;c zlxjyh.n8)drcet 3md cq fw1ct on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The f r1dc)r;;n5ywx/d)hxti. c 8 czvlq33jf edm.orce exerted by X onY is:

  97.31: Two blocks of mass 1.0 k/jjp0w n20i g fdp62lrg and 3.0 kg are connected by a string which has a tensw0n g60fp ip/l2r2 jjdion of 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 th6mrzkr9b 7 k, 6hneti4e right on a frictionless horizontal surface as s 6,ieb7mrtrk6nzhk 9 4hown. 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 box?

  17.15 : Two blocks X andY are in contact on3hi hj/,x ow5x r14rsn a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. hjhin x1/o4xr5,wr3 sWhat is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the oqusc m3kja4 :3lnk v-/ther end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompany : -n3vla3/skqckj4uming figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses o r :pzc65821 1b yekolsqo0, rbzuvo;qf 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 olqzz 1u6bocv01s r5o b82kr yp,e:;qmagnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord aeoc2ym fsteu,s(dow /i /-+gf:-xiina5 h,3wnd arranged as shown in the diam,ftegu h(/ 3a ,i:c wso -od- w2xys+i/eifn5gram 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 mass m isplaced on top of a larger box of mass 2m as : ) ivaex9k/roshown 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 accelev x9/ i)k:aorerating the smaller mass?

  17.25: A box slides with uniform accelervkwi:o/pl;1c l; i0 lzation up an incline. The box has an initial speed of 9.0 m/s and rises iwo:k il/l1l0 cvpz;; 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 co cakk3)mla.1x nstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the distance pkl)a.3k macx1ushed 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 forcetm jj)zd1r htd,qm*(o o bzb9;4)p g h+qlj8(f,a normal force from the incline, and 1 f dmlop 9)h +q(ghr,tzqjb) 8(db;mzj4*t joa 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.