96.30: An 800-kg elevator accelerates sy3n8w( ep k; ph hto,68pidg8pl2fc: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 trc c16c aqm(fsgi /(j.he instant the elevator has a downw qgcs( r(c/.6m jaci1fard acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weigho9a 7ml yb5b0 tqfbl in;e+uj80c3 f0ning 500 N stands on a bathroom scale in the school’s elevato; j9b 7u bmfiqo5+ly0b nelc80atf30nr. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightlq)b-- ralda zt+( fwux,va50m ess” because

  06.16: A scientist in th fxo 5i1ucc;fhl (*a:fe International Space Station experiences "weightlessness" becausefc 5c :lfihfx;o(a1u*

  11.10: A string of negligible mass connects an obje 3he xldo.6+ngct 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 gravitat.3l hn+6dxo egional 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 of ma, w1c imte t.tbd3pn45ss M=10 kg to the ceiling of an elevator. The elevt 4bnmid1 ,3e5w.cttpator 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 cjw:kw+ ha c3gn qr:*q6(-ei ( 1ntngpa 4 kg mass on a horizontal frictionless surface are connq n gjc :gwtpa+(khw63n1 c(r* i-ne:qected 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 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 aree 65x.(jzxkr a connected by a massless strrz6x5jk .e ax(ing 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 frictionless surface are co3bj0 v :93bgzz(igvignnected by a massless string A. They are pulled horizontally across the surface by a second string B with 9i0:vb(zv 3zbggjg i3 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 frictionlgai2kxz0c)a-s +pq; ress surface. A 36 N constant force is aq20gi)s z+a-rp;ckx applied 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*0 morew890 pv wbr+7r4xcy ln string which has a tension of 2.0 N. A force F actsxn 97w4lp bw 8recr0v *r+my0o 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 frictio dt/tmu*y do.vpt7)5vkerg,x6;/a yr nless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a massamdyt)/7dtptr ;5ev o*r/v6 x,.k yg u 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 con1w 1zi,jpkmc4y6 af7 6g ocay8tact on a frictionless horizontal surface. A constp z jma1kg6oa8y4,7c6yfc1wi ant 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 attax+-n l j8zx d9lf-pc(oched to a mass m; the other end is attached to a mass of 1.0x f(jznc-l9dx8p + lo-0 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 kgmx sf,ao k4f +krhs/6kl7zmr-gw77 f3 and 3.0 kg on its ends is hung over a frictionless, mask/wrmo7 skfm as,3f6lz gf4 7+- rk7xhsless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, areir(,. yfnc*x08z jsg x connected by a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface ai x n(f sry,j.g08c*zxnd 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 mass m isplaced on top of a larger box of mass 2m as shol3rs i gcs5z:)wn in the diagram at right. When a force F is applied to the large box, both boxes accelerate to the right with the same accele3c:i)slg rz5s ration. 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 inclinivp2 /enb zx0:2gv-aoe. The box has an initial speed of 9.0 m/s and rises vertically 2v nx 2gzoiea/2v- 0b:p.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 fn+*:z 9 p 4z 3i*r8chwyit0qap9mlmo initially at 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 cha*no3fziyc htmi9 +q:*mpa9zpw0 r 8l4nges 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,a normal fcbbj7 i3l** l8dlk b4jtd .il1w0f 6koorce 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, p 6bij4tc1d7 lkj3w i lf.bl*olkb 08d*arallel to the incline’s surface as shown in the figure.