96.30: An 800-kg elevatora jm7vt*7y z psgpn:(v5/m,df 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 a scale in an elevator. At the insts,y24laif u0 bant the elevator has a s yu,ail4 0b2fdownward 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 N stands on a bathroom 5c6sd o:u.ee3snx7a +q 8ngzw6/satyscale in the school’s elevator. When the scale readse6ng6 7 u3 ty:dw5s8. nsoqca+/esza x 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle arerjx+w x v 7*/mu)ikb4v “weightless” because

  06.16: A scientist in the International Space Station experiencesa7.+hw + pyhzlh4suodg.iajw+ +)d/u "weightlessness" becaushg u )ip ddalho++zwhw+/7 y+.. js4uae

  11.10: A string of negligible mass connects an object of mass M=10 0wyna zkr,pnkr5y. + 1ef)j4l o5- hkrkg 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 ma rp zy+1n0ek 5-hkfakr)w4 y.r5nojl,ss 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 nbn* urs u2q6a n-(de;gegligible mass connects an object of mass M=10 kg to the ceiling of an elevato -drn62u; sngq(* buear. 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 friction-6sf9vu d dfe)less surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B dfu e6-sdf9v)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 masxp zjgd w+(to.l -1x ds2vew ej*x0r;3s on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second str;w0ozx p j 13.x(vt2e d-xw+d*ljersging 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 frictw,z 6wg-jo1/sd ha kv;ionless surface are connected by a massless string A. They are pulled horizohjozkd w,-1v;/a6wgs ntally 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.)xit;j4ddh8o,e 1r fo Atjo1e)4h ro d ;,dx8if 36 N constant force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of ma+qmjbvqmk b+5x1h oq4z)ve2* ss 1.0 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 right. Assuming friction is negligible,vbkb q4x+eo1 zqj hv25)m+m* q what is the value
ofF?

  99.12: Two boxes are accelerated to the rinhfewexrrc(o 0(( 8 p1ght on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smalh rx(ncf0 pw 1((eore8ler 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 contact on * 8mc fj8-ap3kq5fxr ua frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that blx*mkua- f3frc8 8q5 jpock X exerts onto blockY?

  94.25: One end of a massless :ns hmhg*m0 h4rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in sh mn:h* m04ghthe 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 8ojqom8 rsb9t41 : ornm+g :kgis hung over a frictionless, massless pulley as shown to the right. What is the approximateq :to+ngm1j4s8 moborg r:9 k8 magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrangedcb-fi9 hd6;r a 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, ifr9cd-ih 6a;b f 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 box 2ro( q-d v-ylnof 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 vqr(o-- d n2ylsame 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 irz7) x- k)2xxle 4(rjhfxkw 6mncline. The box has an initial speed of 9.0 m)r ( w4xx2rfxm7kljx)e- 6zkh/s 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 resjl2 x o*qo,yw1bh*5:wa0g qvi t 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 changes with the distance pu, qqg1 xj*h2owyowli: *bv0a5shed 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 g5kqo(ntm ;r -rizk7 p.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 iq5 tnr-.pz (k7;rmkoforce by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.