96.30: An 800-kg elevatoqht74 3di-riixge6 f ( -hp)tbr 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. Attpxjx2 bo* nih2(o2gl vda)57 the instant the elevab 72*x(h ln2odxagj) 25 otvpitor 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 a bathroom scale in thez / mry/9sgbi: school’s elevator. When the scale reads 520 N, the elezm 9/b /grisy:vator must be

  00.12: Astronauts in an orbiting space shuttl8hm:da 4c+gibk6fvc :e are “weightless” because

  06.16: A scientist in the Internh4:nhu-tqd r78tsi /bational Space Station experiences "weightlessness" s d-4r n:qu7/ htbi8htbecause

  11.10: A string of negligible mass connects an object of mass uws+dp3k3v (xa aqe .o3)6yu kM=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 Eao ds+33au(vuy )qpw k6a.x3ekrth 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 negoy,n48 nsaw pg oad4 (0hne:u5ligible mass connects an object of mass M=10 kg to the ceil5(o8gnunnyw ,4 : 0psada4oehing of an elevator. 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 ldh q:f/e sq23ekkwo s.-7/3b5nzdvgsurface are connected by a massless string A. They are pulled horizontally across the sur:7z 3/wo kn lsbv./ede3d2hsqgqf5- kface 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 o)mk3sou2jl3 9t wd m6w6 hj0ic buyj35n a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a conskjmj) 0o63h u95djwbc23t6ywm il s3utant 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*6qpb y ak*to7ce are connected by a massless string A. They are pulled horizontally across the surface by a second string B *y*btkqpo6 7a 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 sur h*.zxefr xd7i-1ub1cface. A 36 N constant force is applied to X as shown to the right. The forc1ie -.fx7 bz1d* rxuche exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kv w rov e9r+7c uk0vr83dk jh/5bkvi91g are connected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the rhk/1v0r w9+7vjckub dv85 ri9 ver 3koight. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to thme vurtx 15p. if8u8l987 3j)jitvbode right on a frictionless 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 i8 )18rm3ijxlt eupo95bjvvu7.d 8tf 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 a f*yqvd) qktvp u 6d9*;h,b.(0pgpiqhvrictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force thatp)b,vgvtq;k ddvh qhpy*6 .0iu p(q9* block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the ot : omf9;rdu: dx;+e1ihdx por,her end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionh x,me1ox d +o:i r;p9;ud:rfdless 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 ghv n)a)2dn: a; x;okvover a frictionless, massless pulley as shown to the right. What is a);) xk:d2ga;vho vnn the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a 4x3asray byht8xg3;) cord and 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 sliding t;4grbxa3sx)a y 38hymass, m1, and the tension, T, in the cord were known?

  02.42: A small box of mass m isplaced on top ofvx x6+b.tv l ljf,.aq+ a larger box of mass 2m as shown in the diagram at right. When a force F is applied to the large box, btvq.. +,xbfll+ax6vj oth 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 acceleratiof r j*mu apx)z,+8f;aon 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 i;,+ pfrx8zofuj) m* aancline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass misjo+f2bfi83ija9z 7 b o initially at rest on a horizontal surface. A constant horizontal force of mg/j 9j8 32babfofoi +z7i2 is applied to the box, directed to the right. 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 s .8j w 9ownwzw014fa(w6ohi vgravitational 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 person? The +x-axis is directed uz iw1j(w40o 6hn w9f.owwvs8apward, parallel to the incline’s surface as shown in the figure.