96.30: An 800-kg elevator accelerates downward at(ug ccymh/ f.pc)io; 5$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands on jf ufhxrs452k8,qy8 ha scale in an elevator. At the instant the elevator has a downward achh q8ry, 8ks2fu j45fxceleration 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 in the school’s elevat4kr6 ,ifcd / tbhjyv((or. When thej(khcvi y(,rf6tdb4 / scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shu5j( 1 voz-x toepp1rr5ttle are “weightless” because

  06.16: A scientist in the Interxz:4a e 8s9arlnational Space Station experiences "weightlessnes re4s:ala x98zs" because

  11.10: A string of negligible mass connects an object of mass 4wmv )hxd+o+0q+qgfn s*i t;xc9o6da6 ;cncq 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 gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force +q h;)v*6c+q ndt0 son;cdxoxim+4 f69acqgw 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 cs3(nu sjf6 uuyc3s(;mass M=10 kg to the ceiling of an elevator. The elevator experiences a con jf6 ;s3y3su ncs(uc(ustant 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 su1an u k4-b ,cgc:s*tlqrface are connected by a massless string A. They-b :slgun1,4ckaqct * 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 surface are connjzs28m g pz l/c1eg2t8ected by a massless string A. They are pulled horizontally across the surface by a second string B with a constan2e8t smj1 gg8p2cz/lz t 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 frictionlew+3br 1o 8iu9c7g7o ed jogp0hss surface are connected by a massless string A. 780 uj ho9 1w beogpd+rogci73They 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 contactl9 ri ef/u,doy/* )szj on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted r9)ud /ij,* /loefsz yby X onY is:

  97.31: Two blocks of mass 1.0)) /f jostcgssz3rn/ o569dle 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 shown to the efs9/ lg 6jo)5to3sdc )snr/z right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal s.f 7n:6*zrb m 02pvxo7.vbga vfoubi,urface as shown. The larger box has a mass of r oi na*gfo.v ,.2mf 6z7bbv7uv0:bx p9 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 andYd h;ea .lraymy5i .l+l1d6*1dt rq;iv are in 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 thahr ;1l vl5.i taid6 1e+.l;yayqdm *drt block X exerts onto blockY?

  94.25: One end of a map dc(gp)b,wpqb xl3:x0 (*jghssless rope is attached to a mass m; the other end is attached to3bgl)xh pxwbp0*dj:, (( qcpg 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 masses3psgq,3k dfn y6bygrk o+k i3*a:s:q3 of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, masslgg 3s36k yakr3nfy*qdp,3skiq :o: + bess pulley as shown 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 and arranged as sho+0 8 1mam-i;pm a)+7wqucyx/w.opuddb owm v 2wn 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 sliq 0pv a+mwcowa;2i+p d.wb du/m7-1uomm 8)yxding 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 box of ma v4rmw+:v3mdz (l uvq.ss 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 sm lzrmuv3( w +4.v:qvdame acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides wit ayz:k1b9p*8it c9h1qj h. 7fk 7ofjrqh uniform acceleration up an incline. 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 7fhct1k iqk9h1 o f79. :yz8a prqj*bjincline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initially aeryh4fy945 kewij(c zk/ -z6g t rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changeszce5iry j(g 49k6zfe /y4hwk - 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 gravitational force c b1 zboaj:qf.rid0b1ens1y1)ku6c (,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 rbz0c)an if1y(kds:bu. 1 1c 1j6bq eothe person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.