96.30: An 800-kg elevator accelerates downkrqa jh 4z7n05ward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student sto 9tzxvy .0bi/ands on a scale in an elevator. At the instant the elevator has at.bxz yo0 v/i9 downward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighia 8vil77 at w x*eyd((xlkw.k;ng 500 N stands on a bathroom scale in the school’s elevator. Whexlyea(*l7x i 8 (kavkwdwt7;.n the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbitingvnr uf8k907e;lv wbn; space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightles6qt 8ct ,c+a scwi9jc(sness" becac6q(ciccs 9t8j+a w ,tuse

  11.10: A string of negligible mass connects ao4t4i,sm9o qv4l, x con 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 qv44,oix9mtolco 4 s,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 obje)cdj 1cv j1jf8ct of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitudev) j1j1cjdcf8 $6.0\; m/s^{2}$ . 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 horizonta/aum 1q1nd yk*at*9ca8bx(kbl frictionless surface are connected by a massless string A. They are pulled horizontaln cd8ma/ q*b *kba ayx191utk(ly 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 surfat-5efh * w2o,gb0nagbce are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acc2n,wagofe-gb0 * 5 bhteleration 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 fri ,gml -,.;y(hop 0ku/jqksxpictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleratiuqg(./ kl;,,o-0s hyjpmkix pon 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 surin)xz z2da.j) face. A 36 2))a zx.djnizN 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 kg are connected by a rz-xgi)r7l3mam) 8 kzstring which has a tension of 2.0 N. A force F acts im -8)kazr ir7)3mzlg xn 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 frictiglh,0;ijc: :a b/ rbmzonless horizontal surface as shozhia/ ,rg; ml:bc0b j:wn. The larger box 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 a wbzy (0xbk036eb5kof frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude ofw65z0ky(f30bko bex b the force that block X exerts onto blockY?

  94.25: One end of a massless s ula3 (o;n g-ua60qwlrope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The ropu6;s aogwnl3q(a -l0u e 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 it*(9o 6ul;oc nh g,fxkls ends is hung over a frictionless, massless pulley as shown to the right. What is , cf*(n6ll;9kh oux gothe approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arra/dt,fx70/rxs 1 * tp,wxup sovnged as shown in the diagram with m1 sliding along on ax srw7,x, us*/fx 1ot0/vdppt 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 were known?

  02.42: A small box of mass m is7-6+9do z/hoq8rwz ll; hawrgplaced on top of a larger box of mass 2m as shown in the diagradagwl-+r8/lo ;h zwq769h zorm 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 uniforp+t+-3l hss1:kse a dk82hcfvm acceleration up an incline. The box has an initial 3tps dfk +2hvh -:lsk8c1ae+s speed 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 horiz-ak5j tkbvo .-ontal surface. A constant horizontal aotk- bk5-vj. force of mg/2 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 /9stie ;s y9uya gravitational 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 describe teysi9 syu9/;s 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.