96.30: An 800-kg elevat 0mb7lwsm.ge pmb2fo/j1 g*3ior 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 ars-4/xia 01/e v:f0 uawrjho z scale in an elevator. At the instant the elevator has a downward rh/fjwzea1o4 i 0xuv a-0s r:/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 x0r5wuud-e) x a bathroom scale in the school’s elevator. When the scale readxu u 5)-0ewxrds 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bemc5ehm 6l3 r:6pxe3zd:cqr ) scause

  06.16: A scientist in the Int ;txhy00 2ej rmm u9ybtm(8j+mernational Space Station experiences "weightlessness" becausex(j;th0m89j 0yu y+mtr mm2eb

  11.10: A string of negligible mass connects an object of mass Msg3.c u9ldjcds *4g0w=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 gd0.c j4ds*g3s c 9wluon 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 xl8msu 5d2w8n of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constann8uw8dxl m25 st 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 m t iy)jyv9*d5yass on a horizontal frictionless surface are connected by a massless string A. They are pdi9y )5t*jvyy ulled 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 ma;3tvgm v2tw2ch xc(**8dvg tjss on a horizontal frictionless surface are connected by a massless stringt;*2cdcvtvm 3 wx vj8(*2tgg h 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 st) mf7mrw u )jjg*z,0uurface are connected by a massless string A. They are u wz0 jg))ur,tmfjm7*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 h2s5i 6qemr,q cn uq.miwq,4w7orizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The c6ermqq2 ,4.s un5 7mqqwii,wforce exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg 6ip*5 jl5tax lqf-s-yare connected by a string which has a tension t- xlji5faq 65 *sy-plof 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 k19ed,lvb4(c8effxd b 8l1w f right 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 bd8(18, w b91b evx4kf lfledcfox, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizoif7q kdfd:8 jn3 x2df)ntal surface. A constant 35 2)xfdk i3 :jnqfddf 87N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massles uf z9xcu*tooo -w*0p3zl;3cm+z6mhc s rope is attached to a mass m; the other end is attached to a mass of 1.00 0zfzt9om cx -o;w3 p+uh*3zlm6*couc 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 3.3zsuzrujyq(te2vqt dd)p7 g7 8-*a c:0 kg on its ends is hung over a frict j7tq8-u7prv2e :)z z uasqyd(tgdc 3*ionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1z6 0gv+fmo,3f x 2qhsa and m2, are connected 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,gqx2+hs3maz0 6o fv fass, 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 largerpn( .e417g nnh0uij ty07u xnk 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 the force acceleratinutn7u74(pnj0. enn 0 1i ghyxkg the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an in5 aha9x (5+zq,:4 /vkm c l/pfajrnnbuitial speed of 9.0 m/s and rises vertically 2.6 r ukfj:vz ( 9la+nmax/4bc5q5a/p,nh0 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 horizontam3 dv u9 arro,pz*o4b(l surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficien49,o 3or(* rbm uapvzdt 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 gravitational r rco tq;t9xpetea/yl4();,o force,a normal force from the incline, and a force applied by a person that all are equal in magnox( oy,ptqeter;/ a)t4rcl;9itude. 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.