96.30: An 800-kg elev0klu7f: o b*cq)qy;-elh ij z5ator accelerates 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 ah) g(edh lq0m-bt5 -wo scale in an elevator. At the instant the elevator has a downward accelerationwg-lhht)- e d (5bomq0 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 stan*xwfb2 . hdvc n;*f (dkrxo+y kj4ee5/ds on a bathroom scale in the school’s elevator. When the4j*+(kx 2e kc5v ehdon;d. y fwx*/brf scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are fun;2 5o-uvrgww * p l80vudq,“weightless” because

  06.16: A scientist in the International Space Station experiepf62qg b,a2e)lk r i-rnces "weightlessness" q-b2 p2e6)irkga f, lrbecause

  11.10: A string of negligible mass connects an object of mass M=10 kg to tq2xy-smcv+ pz/jg q f5iw6ss(+2 3jmt he 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 6fwsxzs22(ijs vym5++ jgqp3mt/cq-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-4 jtyp*uy4q w of mass M=10 kg to the ceiling of an elevator. The eleva tpuj4- 4ywqy*tor 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 40 e9h0a dug o;j9s(+ x rj8pa0dyb*dlj kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across xo09h jgjj*daalb0rd8u9(;0e d+y ps 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 0f(fb3h idgx +:jq/c con a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across th3dxb(qj i+cf/ 0h:fg ce 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 1p8i f-t zyeb2se74jwa 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 string z 7eit1-2sjwbyf4pe8B 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 frictio2l1n1wp-euc qqu85 nwnless surface. A 36 N constant force is applied to X as shown to the right. The force exertwuq cn5 u811e2pl -wqned by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg ar,a)6b x wsj0rae connected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the rjw,a x6)s ab0right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless hori ohazmn-qi(x / *(x*hwof f*0uzontal surface as shown. The larger box has a mass of 9 kifzx fwui(0x-on *q/*hh( *maolograms 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 an -1za qyhm8da9dY are in contact on a frictionless horizontal surface. A constantzaya q- 9hm1d8 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 a mass m; the oen- nz+hpnerc )5y- 7gther end is attached to a mass of 1.00 kg. The rope i7 h g rnz+e5cnye)n-p-s 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 friaz3ksf t(7-o x0xtio0ctionless, massless pulley as shown to the right. What is the a -t7(3 sxfzio0ao tx0kpproximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord an k(gl5 frix28+es1lnhd arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2ihlxr(8esgk n 51+fl2 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 n*exxn vx9i52 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. Tn2xv5xx9 ei*nhe 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 ug8 jl6wn+1- rxx0cd 9voqdjo: p an incline. The box has an initial speed of 9.0 m/s and rises0r-jcxlgwd+ jo q:o69nd18 vx 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. al qe8opud+n(e:0. hkA constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficiu(alke+ o0phd.e:qn8ent 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 frictivd/+i8rmqv7nebi qi 0u- 7:e nonless incline 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-axis is directed upward, parallel to the incline’s surf nb8 qqrivuv-e+m7i7id :/e 0nace as shown in the figure.