96.30: An 800-kg elevator accelerates dtg;3vrhbp 52 mownward 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 8- +fd a. s4yec (4jnl,uawnt5w) haymelevator. At the instant the elevator has a downward accelt 4)wl 4jyhaf wednac-5,.n(8y saum+ eration 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 si.qh2 *x*qjvbcale in the school’s elevator 2v*hxj iq.q*b. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are uryn( y(eyh / *75ng7cjjaisy ay -0m(“weightless” because

  06.16: A scientist in the Intel j9 rl/ad6k0fds*)ye rnational Space Station experiences "weightlessness"al0dkef *9j) d s/ly6r because

  11.10: A string of negligible mass con m+utl/4( hxkvlnmc3/nects an object of 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 gravitatiotn3l/ kum/4mh+c l(xvnal 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 masswa15qc4gnjs 0 connects an object of mass M=10 kg to the ceilincqw 5 g4as1n0jg of an elevator. 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 are ctggh*ri3lc (-5phbd / onnected by a massless string A. They are pulled horizontalcb/(g- p*i3rhldt5 g hly 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 horiz +llvarf;)4 )zkwwl u6.iocs )ontal frictionless surface are connected by a massless stri4u c)lvfz6i;.rl)w alsok) +w ng 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 A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass on a horizontal frictii:d+8fuqei :04d3ons nv f.wzonless surface are connected by a massless string A. Th.in weoqd0 n fvds:i+4uf8z3 :ey 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 in contact on a horizontal frictionless surface. Ar oqo/j. 5mc7c 36 N constant force is a .o jq5oc/7cmrpplied 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 a string whicy c4)aqli)kp17m.kx6cun d n0 h has a tension of 2.0 N. A force F a)idk 7l.1a)uc4mpy0q nxk c6 ncts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal sur6y5fieovt/3 wface as shown. The larger box has a masy/ 6ft i3wve5os 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 contayy,1s;/obivk.nr p f*ct on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of they n,.rp 1ybo;kvfs*i/ force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the jimdv xs8kkc +85y pu lcmo.:- by/qgc+n7( .wother end is attachywcq 8. u.cdo (kyki- m7b+m:vx+scgn j85p/led 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 1.5 kg and 3.0 kg on its ends is hung over a friti,w4hk i 8;dectionless, massless pulley as show,kti; 8iw4dh en to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord :5em1of -dswcand arranged as shown in the diagram with m1 slidi: eswc mf-1do5ng along 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 mass2z9 8k yqvp2g:zr3a. ao/srjt 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 r/v o2sz t39aq2pay8.:gr kr jzight 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 inck+k1ry4dx5 kg)nmr,pline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of)yxkr4 pr ,km+kg5d1 n 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 surfmtjw3 bx6*gz /ace. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with 6zm xw3bt*g/jthe 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 gravitatj r3fdxtml)2*c6 b vc)ional 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 )bl32vmcxtf *rcj d 6)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.