96.30: An 800-kg elevatorz53 wdeku*,bz(ff(o p 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 elex2 a61e4cbahrzu) ssat2 8gd1vator. At the instant the elevator ha)r281xh zea udcsats164a g b2s 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 bath/c cjgg :te:b4dx:7u l4lzav2room scale in the school’s elevator. When the scale reads 520 N, the elevator mu /l7egu:lxdcz:4 2j cbt4a v:gst be

  00.12: Astronauts in an orbiting space shuttle are “weig s,w a).v n+eoqe56jqghtless” because

  06.16: A scientist in the International Space Stativsm t)s zkxscngv82n1145gcz5+ wv /yon experiences "weightlessness" becauk z1wc+czvgnm4) v2 tvg /sssn5y851 xse

  11.10: A string of negligible mass connects an object of mass M j6 ufo7tw:zlyiti89 4 lze-k4=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let t:k6ewf4zt-ljiyz8io 7l 9u4Trepresent 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 mp3/bap) 9 czj54nsjgs ass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration z j 39jasc5ppgb/4s)n 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 frictionless surface ah8 ypcc5w cxw4woa511:l (jdjre connected by a massless string A. They are pulled horizontally across the surface j pcw:hl4ww c8a x15(yc 15djoby 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 hn-bco* lb+a9h orizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a c*ochna +-b 9lbonstant 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 frc20 y5/o tkwslictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a c/l s2ky5t w0oconstant 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 horwpci7e v:ziago5- *,y izontal frictionless surface. A 36 N constant force is applied to X as sho gci,a-o:z*w5ie7p vy wn to the right. The force exerted by X onY is:

  97.31: Two blocks of ma(ec0xg 6pjo ae)j .av9ss 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the dj (ecj v)a0eoga6p9 x.irection shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the rigyw+tjug 2y5+wugw.o(b+ db0kht on a frictionless horizontal surface as shown.y2wwby5u uj g k++ 0+dtb.g(ow 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 on a frictionless horizontal surface. ua ;4+5ms-p.y.d3 x mcfkpwnckatj(. A constant 35 N force is applied to the right onto block Y. What is the mmnwp..yk3 (;cxuas dkcm4j+f5.- pat agnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached 9*rk,f 0pgu s- m jaqh)6+ndn0*wgbhf to a mass m; the other end is attach kw*,0jb) hqmg 0f9h*6dg+ nan-uspfred to a mass of 1.00 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 1g ujlp9sl o2-wm; b0zsk r9-3q.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as show-p3ulml90qk2r b ;j - gw9ssozn to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2,6emz i-; mzm)v 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 tmzmzv- 6e )im;he 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 ak-53b )(brf 4lrn ozoof 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. a bb4-z kfn3()lro5o rThe 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 incline. The box has an q+ 2. m8zr;vv-dqhan w9gvcy9 rj:xoux+r;a7 initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the a8;;-99v +nvqchj+ zomr :7xdaqgxvru .yr2wincline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initauvkn6 5rm+ f m-ug1t:v22wqrially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The mr2u- 2t6:vf15+gkarun mw vqcoefficient 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 force,a nor(p(r,9n,jmdalst c) emal force from the incline, and a force appletp) m,lsn9aj d(cr(,ied 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.