96.30: An 800-kg elevator acceleratq+( lrlynp,(res 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 th- bl.m+jc +lite instant the elevator has a downward acceleration of +l l +i-jctb.m$1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a bathroom scale b dk)qf8, it7c78aqkjc /c,5rjc xkq -in the school’s elevator. When the scale reads 520 N, th ck8q j,7ak 5c bcf/,k xid7jqq)tcr8-e elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightftx7s2-o ke15hojrl*d i my3, less” because

  06.16: A scientist in the Internation;4j9gacvj g ,uo9ispy 8(i9qd0,v rzyal Space Station experiences "weightlessness" becausyrzispj yqugv aid,c;g4(jv9,9 89o0 e

  11.10: A string of negligible mass connects an object of mass M=10 kgauvo bp8tpq g+- j/.(ly:6c nz 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 choicqovl+-j(bnzt: g/86puc ay .pes describes the relationships between these forces?

  12.10: A string of negligiblevf0i) d/fm gz8rv ik-c-0ns8vc-0qy h mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator sc0v-f yvv8/d ignqir- m0 0-)ckfzh8experiences 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 frictionless surface are connjk1aj*6 ohpsz *s *972ae xxsiected by a massless string A. They are puk **iex 7sjj6a9h1ss*z2p aoxlled 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 a 1axpiel*a.2 +1lug gend a 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the sp*g21xu+ l gia1al.eeurface 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 surfbggk fk x5n8;oh n215qace are connected by a massless string A. They are pulled horizontally across k gf581nxgq;5bko 2hnthe 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 horizontal frictionless surfacple3lw7 q f;k8e. A 36 N constant force is applied to X as shown to the right. The folqe7k;w 8l 3fprce exerted by X onY is:

  97.31: Two blocks of ma7ru sbezuy5c zkz) 0/+ss 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 su0rkyu zz 7szbc/) e5+hown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless hxshs6y 6tbwc47 017ol* atynhorizontal 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 box, with what force does the larobt7t4cx7 w h*6ys01 y6hlnsager box pull on the smaller box?

  17.15 : Two blocks X andY are ijaqk5pgu + w*g-22xcin contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts ontg 2 i+wc-gjqa*u5xk2 po blockY?

  94.25: One end of a massless rope is attached t-o7h*d:yeodg7dt8q9cr.nv bfn r p-1o a mass m; the other end is attached to a mass of 1.00 kg. The ropenqr * 9-cgbten7 ro.d1v:7pdhof8y d- 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 3.0 is94dz ngh7:bz3pe; d kg on its ends is hung over a frictionless, massless pulley as shown to the right. 9ip g4zhzbs;n : dd73eWhat is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and a22z w7) k e:a un1knks-utsiy5rranged as shown in the diagram with m1 sliding along on a fr) t ny27a:kzkni52skuwu -1esictionless 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 onqiy- 53fj -j i:hg/bmf 7o 32uxwsnqf) 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 ui5fhjn3wfox- mg 7b2-i)q3jy:/fqs would be the force accelerating the smaller mass?

  17.25: A box slides witv:( 6, p+dwr 1i8qz1h5r-c rgs uvhmteh uniform acceleration up an incline. The box has an initial speed of 9.0 5rvqwe1gzh8+ r-,dh sv1p: c tr6u(imm/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 on a horizontal surface. A confnb1df83 r a7pyr3ts +stant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with thys+7p1nd ra3 r8b3ftfe 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 i7pnqy4b92xtt ciqu,9m2j tyiuw a fp60 :3: osncline has a gravitational 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 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-axin97q3:q 2 p2tt 06p:i49uy jucowtiy,xsaf m bs is directed upward, parallel to the incline’s surface as shown in the figure.