96.30: An 800-kg elevator accelerates ymd t1hg ,z,y rim-:3bdownward 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 eleva.pqqrpli bj0v5znv ;b(2(l +ttor. At the instant the elevatorb viplv; 5.tz( bj02pqr(ln+q has a downward 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 ansxd i)u(k5k1ue e9,6sux8rz h wh2:c bathroom scale in the school’s elevator s8z(xke6,u rni2sdkx h: )19huc5w eu. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shw1r5 ef3nv1y65: / m kjzyxgcuuttle are “weightless” because

  06.16: A scientist in the Interni xk*oql7+;ff50zcox ational Space Station experiences "weightlessness" xx7fkiq l 5cz *;0oof+because

  11.10: A string of negligible mass connects an object ofg(;hxaxuc k,--w mw3k mass M=10 kg to the ceiling of an elevator. The elevator experiec- ( -x,wgk3hkaxmw; unces 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 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 thewg,wx 8 wni4f:d (wv0+k* jbvz ceiling of an elevator. The elevator experiences a constant downwardv* (zj:df4ix w +8gk0,nbwwvw 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 ovhwi0e3we+ p2 n a horizontal frictionless surface are connected by a massless stringip2 e3hve0ww + 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 horizrm02 qox q 6:/ir:jxbbp;v: 8mha,wu rontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constanrqurvirm20bj8o waxh : q:6/:m,x b; pt 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 surfa/x-qv)yk pnn :-nyj-mce are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleration-p/m-)nxjy ynkqnv : - 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 contacte ym1i45 d (udg nsac35g7jml- on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The forcedu g5nma(3g- myd4lcijs51 7e exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string whi4tbz n(n1utm5c 1xjw/ch has a tension of 2.0 N. A force F acts in the direction showt(j4/x5t1 n zuw mb1ncn to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the righ(n+tk zo.dff)t on a frictionless horizontal surface as shown. The larger b+( t)n.fokfdzox 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, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on ae+m3to*e: 0sg a zsgc5 frictionless horizontal surface. A constant 35 N force is applied to the right onto bloce0ms a:c gs5e+ *zg3tok Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached tomsc)a vwe24m5(b rw7k 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 the accompanying figure. Mass mkrbw)em24(mc sv a5 w7 accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with massn.- by6y gi x;1d+ijhj+2kmud z 3-ktzes of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the mt+mj knzhx .- jyzub3d-2i+y ;k6i1gdasses?

  02.36: Two masses, m1 and m2, are connected by a cord anlz*cih,0/w w xd 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 slidiz0*cwl/hx i,wng 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 -j7p)e 7 m*e8lh4e erz eocc/bbox 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. The coefficient of frictioee4j7/ cle poc)ze* h-m8r7 ebn between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. Tho;dgho 7 k)c3we box has an initial speed of 9.0 m/s and rises vertically 2.60 before;cwo gh3)7 kod 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. A consv9fd, v uxc )tjp)dw/5tant horizontal force of mg/2 is applied to the box, directed to the right. Tu v,dfw c)vjx/pdt59)he coefficient 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 frictionless incline has a gravitational force,a nm +ydzg)fvir08 (,xbyks:k, t ormal 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 countercloc 80 :bxifty(r),kv dy+skm gz,kwise 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 shown in the figure.