96.30: An 800-kg elevator accelerates m 10t gyho:t-t nn56zzopb9ycd08vo 0downward 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 ipbrj;xwk.sp-wc1 8 :3;qzmoxnstant the elevator has a downwapxb x3.j: w1z8mkc-swqor p;;rd 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 mkg.3ngyy /0w on a bathroom scale in the school’s elevator. When the scale reads 520 N, the elevator mun/.g0y gwy 3kmst be

  00.12: Astronauts in an orbiting space shrnjpzd 8 sf1 u6lw1h)5rg4f8auttle are “weightless” because

  06.16: A scientist in the International Space s7,6 o kz 8v7( nanod;yyy4aghStation experiences "weightlessness" becaus n4 ds7,oz(gkny;y8a6ohya v7e

  11.10: A string of negligible mass connects an object of mass M=10 kge9ci ww *le;c- 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 (t-cew;li 9w ec*ension), 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 conne 9m9k.(v,xdey soh(mi5m zkt)cts an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitutx9mz( sdme(9k,.y ivoh)km 5de $6.0\; m/s^{2}$ . 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 surface are ml)yy0z 4avedld)w43 connected by a massless sted4y lm ad 4w)zl)03vyring 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 surn4 u:.4m 7 b9ry zxatpf5g/lnrface are connected by a massless string A. They are pulled horizontally across the surface by a second string B nmbrf gu4r x9.t 4yl/a5 7pz:nwith 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 horizontc )ck3gt 6qoh2al frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a seco2 khcgo)3ct6qnd 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 contackfv3* igc j6+y9xn hj0t on a horizontal frictionless surface. A 36 x*jg9jn 60f3hy ick+vN constant force is 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 kq f,2ks4 zko8 .qg5jxlg 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, what is t 8.5o,l s gzkkqj24fqxhe value
ofF?

  99.12: Two boxes are accelerated to the right on a frictiou7s05 v1s2iod e5p. xsev oyc) 40lwmwnless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilograms. If a 24lomiyoev50sp ed0)1sw7 5.v4x 2us wc 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 coblh(17h +y+qnrojz ,intact on a frictionless horizontal surface. A constant 351bn7z+yrhh io+q(j ,l 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 ro:kom.u q8 yg(u ftb)2t76fvqrpe is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rrg.f ov(y27mfut)8:t kbq uq6ope 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 kg and 3.0 kg on its ends is hung over a4d uaumm9f9ge(rg( qbp9o)3d frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerat) dm9fgm(9r b4audge 3qupo9 (ion of the masses?

  02.36: Two masses, m1 and m2, arem.u0ep c f;:d ttv(cbfyg-*+y connected by a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanm(bvy:0fg-t.d ecu* y ;fctp+ging 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 2pk5xw+wlx5ir ,zch0. m as shown in th5.w0xlicw pk r5+,xzhe 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 friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform ac) -:(bnbv fn2ru jot 6xno89zfceleration 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 inclinf-6(nzofbrxntnvj)2 bu:9 8 oe 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*wc+w.mvm t)hd;3kas surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coe v;mdkwwt s m+ah*3c.)fficient 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, twsbqh g9.2o;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 counterclockwto9;sb. qw2h gise 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.