96.30: An 800-kg elevator accelerates dowlgha/zey0e wsy5p (z+ mjagr7 uu/ 2:r9+ na:tnward 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 elevato (r//phtowcor1, o b.tj 8o5hlr. At the instant the elevator has a d, o8 b hrt(oh1j/tr/.woo lp5cownward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 1t(ojsc ogur dl:1d.uve /38tN stands on a bathroom scale in the school’s elevator. When the scalrujddl1o.3/tvto ( 1c8 esug:e reads 520 N, the elevator must be

  00.12: Astronauts in an +o p;pq9djwz 3orbiting space shuttle are “weightless” because

  06.16: A scientist in th89 s f9omqf(xkmh6)zz e International Space Station experiences "weightlessness" bemxqm 9 9ko 6)z(8zffhscause

  11.10: A string of negligible mass connects an object of mass M=10 kg to-a j(yvm -kmy7 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 elevat7 -j(-vmyka myor, 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 mass M=10 kg to tmyn u-:7htkq a +6oz*r ux6pt;he ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitun6+*-u:p y; 6xhuatr qt7omzkde $6.0\; m/s^{2}$ . 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 fqab5 s-c m8opm zy9p*1rictionless surface are connected by a massless string A. They are pulled horizons* pzm1cp-obq m8 y9a5tally 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- +yoja+dyhj1 a 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second -o +j dyh1+yajstring 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 mas8l)ps2v 2 z om0u8vkkg:f+cxes on a horizontal frictionless surface are connectv fu28ke8 m)g0+:xl 2vszkcpoed by 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 net force on the 2 kg mass?

  96.33 : Two blocks X axght 4 ex5jt.5e7 0dt-it(dsfndY are in contact on a horizontal frictionless surface. A 36 N constant force is appliedt5j thi .f4eteg x(-d0xts75 d to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 l3uw+eb3e-i tmez ;5ekg 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. Assuming friction is negligible, what is thbe tzu5- 3;3ee+mw leie value
ofF?

  99.12: Two boxes are accelerated to thq5x8, egr y6pg-ynl o-e 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, o,-g 8yy-e5r pg lq6xnwith what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frict-* 0i 8 ipg2m5xhg nh; ldq)dzawv(be5ionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnbnm5hipg)wiz-eh0; l d (g25 * q8vadxitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rop td( 438,o, xshvsj;lo .pldqre is attached to a mass m; the other end is attached to a,v3p ,s.jhor xt; oq ld(ld8s4 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 s0 ib 70m;vjilfrictionless, massless pulley as shown to thj m0i0v b;i7sle right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and8zrtfbuc d,eq0 9/,jx m2, are connected by a cord and arranged as 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, if both the sliding mass, m1, and the tension, T, in the cord were known? 9 ,rjz 08btfdc q,ue/x

  02.42: A small box of mass m isplaced on top of a larger box of mass 2me1mjj1: 4xp re 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 frxj: j 4ep1e1rmiction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an inclp pq 6uh7(wng*fo*6j8gn:oljine. The box has an initial speed of 9.0 m/s u6ho(76qjp:fon wjglp**n8g 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 surfam 3 0rzgeg,fi(z bc:9m 4.ywwhce. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of fr9wc.yme zz,m 4ihf0 (ggrw:3 biction 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 gravitati 6(qhr*qb eee.onal 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-axis is directed upward, parallel to the incline’s surface as shqe*.rh ee(6 qbown in the figure.