96.30: An 800-kg elevator accelerates dows7t +1jsqfl7 bnward 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 if :/cevot.am.gehs5o ff-1a3nstant the elevator has a downward acceao-.:s5.1ch /ef fgofta e3vmleration 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 i( sv gby;5 zw;.u-iyhwn the school’s elevator. When the scale reads 520 N, the elevator w-h yu;izs; (5ygwv b.must be

  00.12: Astronauts in an orbiting spa(v0b z uc9i+twce shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiencehzs+m vx,u c)+ae1;(hdyp bj /imd:9ws "weightlessness" becaus um zw+imj/b(d c a;,v 1hsp:e+9)yhdxe

  11.10: A string of negligible mass connects an object of mass M=10 kg to 9fni2xu6o6i ithe 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 9fo6in u2ix 6iforce 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 masazn md7/t6: jwzcagdai botw q1ui )9f) :)9a3s connects an object of mass M=10 kg to the ceiling of an elevator. dbn:ict:d)6 waga3/1)9zwom ia7 9az)jtquf 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 4 kg mass on a horizontal frictionless surface are5xfc q7:/ apkx connected by a massless string A:p qc5kfax /7x. 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 surfa0 o,(f l7vxoiace are connected by a massless string A. They are pulled horizontally across the surface by a,0olv( xo 7ifa 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 surp24ypas38 k q:lunuzou bj(8)t 0j-yg 2up+i gface are connected by a massless stringb4i :q) 8a op2tjl(gpzy0k+u j83g y n2u-spuu 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are -a 6b/ s/ffi9cvui ru9in contact on a horizontal frictionless surface. A 3ur/ba- f9ciu9f/vi s6 6 N constant force is 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 8dsc:m8-j rqbx s(rg 2a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming frict:q -8cs xmbjd2 rrg8(sion is negligible, what is the value
ofF?

  99.12: Two boxes are axzb kn)f719pi r f/7;bo 9neymccelerated to the 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 box, with what force does the larger box pull on the smallyxne k7 mz)on f/b ;p7br19f9ier box?

  17.15 : Two blocks X andY are in contact on a frictionles d1tge 7wbed+2c 7ql.)qi3e las horizontal surface. A constant 35 N force is applied tot7)a d3+q7wc12eqbed. geli l the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a m7c)mvhhkbm-a5t/s q:g34hp bassless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung k- hqc):3b4ht hs5pva m /g7mbover 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 kgc69k s 0s3.vmw ltwqu6o8oay9 and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masssvm ywa68ko36uco.ws09q tl 9es?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged aszxa rl53rdl mp:o+6 b. shown in the diagram with m1 sliding alonxzdml6+5 pr: .aobl3r g on a frictionless 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 on top of a larger b3-lxdrl 6jmie3 /q; xdoe.9oaox of mass 2m as shown in the diag3. amr6-xqoexi/3; j dll9edoram 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 mass?

  17.25: A box slides with uniform acceleration up an incl 96vlj1gzczt . yvaub.qi:q,6ine. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the incline i.clz :g,6q y1v t.vbaz69ju qis$30^{\circ}$, 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 constant( 8,j2evtx troox5ssa4ce 2w 9 horizontal force of mg/2 is applied to the box, dire4t2xos,8xt w92ee(oc arjvs 5cted to the right. The coefficient 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 gwuj6c4 2v/g- uvrr+aauez 2 a(ravitational 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 +xa e46-cu 2au2a(rvjvuz +g /wr-axis is directed upward, parallel to the incline’s surface as shown in the figure.