96.30: An 800-kg elevator o*l s4(2hkhcvy nu.z2a-lk1 vaccelerates 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 inszt4rl-9hwt8. vmj c,c tant the elevator has a downward acce89 -jr ctwclzv,t4hm .leration 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 scale in the sch c,3r;rf( usdpool’s elevator. Wcrp3; ,(rsud fhen the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbi6p:f+r8smc7s- fea k fting space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightlessnes ywu(:ug)0g oltog0 4gs" because: t0og)uywu(go4lg 0 g

  11.10: A string of negligible mass connects an object olt *.lm7imk6tf mass M=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 magnitude of the net force acting on the mass M. Which one of the following choices describes the relationshipsk7lt i mm.lt*6 between these forces?

  12.10: A string of negligible mass connects an object of mass M=10 k8bhez qh4j18rq,e7-le +xwncp d7s ( lg to the ceiling of an elevator.xljec 8r-eh7ezh+ ldbq14n8(swq p, 7 The elevator 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 + s zcs:t pit7h3nc2 .zxkll.54 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface zt:czi nhk lplt s735s+c .2.xby 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 feb55ns4l: fs9/ e )zhzq:cfhirictionless surface are connected by a massless string A. They are pulled horizontally across the surfa/: 45 f)eclhnqs9 :e 5fszzbihce 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 horiz mb;ve6uflqyow k;+ac6fek f 4og-203ontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second 3 acffo y;ekegqbo;k24 m-lf6 v6+w u0string 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 horizontal fri9nad txb) )0-k a)cdtvctionless surface. A 36 N constant force is applied to Xdx k)-)ta)9cd0 tbv na as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of 7 br/ec*dxvr yt+t f.il3e6q2mass 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 direction shown to the right. Assu i*xtlr+yve3t 2e.rbcfd/6q7 ming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal z5s/ki0-crq0/q ifjq v,9 luxsurface 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 larvc0i/slkqq0 ,/f - 5zqxurj9 iger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a bci);roufkza5nx 1)/ frictionless horizontal surface. A constant 35 N force is applied to the right onto )ziua);/k or fx1b 5ncblock Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to acseozb zu+8+4 ok7a b/ mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompan 8eubk4+ /bsaoz+oz 7cying 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)toa c *e0.sjt is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude t0j.osca et)*of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged a-4gb7 8 qebxwls 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, ifqw-4 b8bxl g7e 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 2m26dx l: w:fm4tv(f z- r.rvma 1qj4cdqwgnp3 - 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 acceler44pq vw . 3d:ffm6-(-xwl:qd rm2gz1tajcnv rating the smaller mass?

  17.25: A box slides with unifoi 3itjy )zn5 z;6zu(yorm acceleration up an incline. The box has an initial speed of 9.0 5(o 3iyiz)uj;6 zz nytm/s and rises 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 :yb4* tkr rv+ghmt6,s(o uusi )lq(f3 on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of frictifumvt 6g (o+3uqr(is:bk4 sryt, )h*lon 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,( m651lif,,bi: v(js1j rppbxx1b zcw9rwz0y 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 of the applied force by th jvp: 5i,xzbsx9bli0 y,1rjzpwc1 6 1 mwf(br(e person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.