96.30: An 800-kg elevdspuc(om 4 )hpje.w2 9ator 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 sca)zhunh v 3i)i05 xcb./ qygnt4le in an elevator. At the instant the elevator has a)yxb q5zthv04ic3 i .u) hgn/n 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 a bathroom scale in the sap2g +vjqxj/ 7kn( h(qchool’s elevator. When the sj/g(q ap+vq2xnj7 h( kcale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weighh .k;e84tolnihw + 1lstless” because

  06.16: A scientist in the International Space Station experiences "weightnv0qk1vm la 8 1i1r0mvkp k,g1lessness"1i0 v1mlkkpm,ga0 rq v1nv81k because

  11.10: A string of negligi ,xfu w6q gp r/,ayo.gj2 01mfxx/.dszble mass connects an object 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 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 massf..rdx/a q uw2g/ ,jfg ,0pmz1oyxxs6 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 the c nl8hah3(;8d 1xwqxeheiling of an elevatonh; h1( d8qlx3a8exwhr. 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 frictionless surface ar/j) ha:/vvb epqt 73oge conn/7evv:a )bh3q ojpg/t ected 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 fricttrdbr:+po5qf3. v sp4vv 6 2fbionless surface are connected by a massless string A. They are pulled horizontally:do.v5r2rf psftq6 4bv+3bvp 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 v y cd3adwmmmeb*d.(;k34ld7frictionless surface are connected by a massless string A. They are pull *(w73ddcl3;ae . ymmkmb4ddved 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 contact on a horizontal yrc+j/9rjt: 5t osom2v4jct+ frictionless surface. A 36 N constant force is applied to X as shown to the right. The force e4jvs / +otrcj9:25rt +jcy tmoxerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a stri x;lvyc+:b 3yxng which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what isy+:y; x 3vxcbl the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless ;dynq(7,u(wohosn6qv3:w3 3 ty sl qq horizontal surface as shown. The larger box has a mass of 9 kiloowyq7vnh3qq 3qn, u:w(;6o dly (t3ssgrams 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 eqpo 4t2w +n0ga frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that blocqn4 to p0+2gwek X exerts onto blockY?

  94.25: One end of a massless rope isg)b65bd 3e /gf gy-0 ssgmprk3 attached to a mass m; the other end is attached to a mass of 1.00 kg. The ropebfb3r )gepg 50gs-d y 3s/m6kg 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 mas uxyzv ) w22tfo7boc( u:j:x fqt+hhkq/:5 n2qses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless,ocwz yt vtq u+ xqhbf7 :u:ofn k)q225/jxh:2( massless 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 arrangedx mlknb(t .gv8c9 61xh as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frixgxv6h.n( cb81m9 lk tctionless 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 mas t1ckz .y7w6mms 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 atm 71c 6ky.zmwcceleration. 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 incline. The box8+l:6 ol vqj jg3xk)r5cj gkj4 has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the anqjc3k+olg8l j :rjj 54)6xgv kgle 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 horizontannjv 5jw f ;ujx6qw(37l surface. A constant horizontal force of mg/2 is applied to the box, directed to the rignwx3v ;7nwfu(5jj 6qj ht. The 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 gravitationaln85 ayo4 7 6bh0g9gnpg)y cu vw0o6slv 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 force by the v7n v5aspc 0on8gygg4) hbyw 9o6ul6 0person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.