96.30: An 800-kg elevator accqsr(- htho8xniv094u elerates 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 instant the elhy3 ( :yg9jhc)tyowi1c ; xi-xevator has a downward acceleratio;x:cy3w)i9h-1jt x ygi ch (yon 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 bath4 3sy zo5+;yy0ecxwunroom scale in the school’s elevator. When the scale reads 520 N, the el4 wyyz us+cnyxeo5;30 evator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” becau1s.5ky ml ij4+nfjmylk+3qd ,se

  06.16: A scientist in the International fp ;rt)m3l4 9zkzj oq)Space Station experiences "weightlessness" be)mjz);9ptl 4f3qr zkocause

  11.10: A string of negligible mass connects an object of mass M=10 kg tokaylb( i:h0ljss *rr8nj0,.b the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trepresent the magnitude of trs,bi(0a*j blls ykh80:n . rjhe 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 1my7 0w crag),j xt*p2tpmlb*mass M=10 kg to the ceiling of an elevator. The elevator experlmb jt7t1gmw2 ,rpa) c*xy0*p iences 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 4 kg mass on a horizontal frictioxttz :j9qx- 3onless surface are connected b:xqttox3j-9 zy 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 force of string B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal frictionless surfxs z,lgjgy48t40 tyn.unz)f- ace are connected by a massless string A. They are pulled horizontally across the surface by a second strin gltz0) .,f-uy8jy n4szn4xgtg 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 v n thoc0z+e*)frictionless surface are connected by a massless string A. They are pulled horizontally across z*+e vt0co) hnthe 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 1iltdb2hpy7t9; x.r tin contact on a horizontal frictionless surface. A 36 N constant force islyr.d t92t7;p ti1bhx applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by qmyhc08togy ;y5 pw7- sh*q7mbo. 6i ba string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming frictohg 7. m0yb o*hqy8;w5 7pqc6stmiy-bion is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal j/w)9ovhp 9t;ztar v2surface as shown. The larger box has a mass of 9 kv9;jp2or ttvh9/a)wz ilograms 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 hoht1jx*)-nmra 3i/pj-sbg4 y grizontal surface. A consn- a-ghi tysr1g 4p j*3bj/x)mtant 35 N 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 massless rope is attached to h*du9o88zc5k :yb -hwjfzq 2va 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 accompanying figure. Mass m88zwyfod:2zj h*v9-buh c k5q 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 endsgll+z-(aqze:thdbx v dj d1 74,/0 hdo is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of thb-x+hld 4jz/7(dd0o v, qehadlzgt1 :e masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as shown in) ko.vxr94d, ibx+ zub /lktq1 the diagram with m1 sliding along on a frictionless surz.l v9qrxkt+ kd )41 b,i/buxoface 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 moj xz0 ,zfg1e6ass m isplaced on top of 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. The coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller massjo 1 0z,xf6zge?

  17.25: A box slides witw c q1xd 8q4oa01oy5yn19ytvk.g-tbch uniform acceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to resq0a.9oyy18x-1bto yn c5 gtv14dckwqt. 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 re2 fkk ow6wks(kvm-7.(nc,cy qst on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surfam n wq,2v(cwk.k(7 k6cof- sykce 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 gravitationalshdpz t;ds /7.pl8 6ae force,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 and st7adz.6 lep;shp8/gle 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.