96.30: An 800-kg elevator accelerate+, fil18tufctc, zy4 is downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student st 5e4vyia0am2m ands on a scale in an elevator. At the instant the elevator has a downward accelera0m42mi v yea5ation 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 sch pvbpu8:ptrmz.u+7+ ph*n r5 jool’s elevator. When the scale reads 520 N, the elev7ppv b+ *5tzr 8upmu.jp:n hr+ator must be

  00.12: Astronauts in an orbiting8-7-9 pr mtl cwo.imag space shuttle are “weightless” because

  06.16: A scientist in the Internationa6 p8/tppaa4/;fs+ zeoterw )pl Space Station experiences "weightlessness" bop//z p we)fa6t;+satrep8 p 4ecause

  11.10: A string of negligible mass c-(g mpz.(vteuys 53 6whc o4sbonnects an object of mass M=10 kg to the ceiling of an elevator. The3 bsws6(v-zh eum t(.yo5c 4gp 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 mass M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass c+ 457:: rzteo vvhgd1gtkbj; wonnects an object of mass M=10 kg to the ceiling of an elevatoegkvtv hd:+4r 1jz :;5 g7owtbr. 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 t72 uk2 5 b ,wgjv97qvrbi60skf/ whmthorizontal frictionless surface are connected by a massless string A. Tugj9kk2 i5 0,wm7 qbt/ wv2hvsfr76bthey 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 fri n: -dqjw1 fid,klrl-ygspja-4h 2 m.-1cxr/kctionless surface are connected by a massless string A. They are pulled horizontally across the surface by a seco l4d1j c, r2.q1n:ldw -ykiagjpf --kr-h/sxmnd 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 hor(vqnr5btjlk 2bkm 1:q:429 afeh* micizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second slrq5 f:k2 emkb(ahqbitmn49j:v12 *ctring 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 frictionless03uqs cnm6v4 , r2* zjkgo8hfa surface. A 36 N constant force is applied to X as shown to the right. The ff m2h0o vrz *jg kuq6sa83,4ncorce exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connectedtch fm0lb729z+ n me:a by a string which has a:tecb2a hmz9+n l 0mf7 tension of 2.0 N. A force F acts 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 fric., jiwqc-e0si tionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilogramsiq,isj-c e .w0. 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 a frictionless horizonta *fa0*sr zgkd9l surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force th 9a*fs dkgzr0*at block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the ogx au (cykcn0,/p -jj6ther 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 m accelerates downward atn6y (kp jx/-gjcacu,0 $5.0\;m/s^{2}$. What is m?

  97.30 : A string wit ao)7ac 9x0c7+fnrws -1rwzrj h masses 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 the1xo afc) zcj07-rswa9rn +wr7 acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord a3f siwkan8 / bd+gmy:9nd 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 mass, m1, and the tension, T, in the cord wdw ksn: b8i +afg3my9/ere known?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2m as shown 5r; (-hzwdlb )q.pfak in the diagram at right. When)da ( lw5phfzq;.k-br 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 acceleration up an incline.v7**bwxvwy 6 :anbzg: The box has an initial :b b azvxvy6w* :w7n*gspeed of 9.0 m/s and rises vertically 2.60 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 initially at rest on a horizont qvc-hu iim*e,;k6mj-al surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the distanciui ;-qh6mce -mk,j *ve 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 f 7th2zuw2ac 7eorce,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 applie2c ate2 hw7z7ud force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.