96.30: An 800-kg elevator jtgrj; 6a :08 ow4zqsaaccelerates 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. At th5qdz lpdd*ua86t7+ +pvdk u(ke instant the elevator has a*78pkqud dz+ l(+5 k dvtudp6a 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 d .i4 aqk+xz+d 7s4mgv500 N stands on a bathroom scale in the school’s elevator. When 4 q+sdk7ad.x+vz4imgthe scale reads 520 N, the elevator must be

  00.12: Astronauts in anzwu48nxl) 4xcrxaa0k ((na, w orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Statig6j;s(k6z0i 7oh3a +e utd omcon experiences "weightlessness" becausea; ok7 0( +des63mjui6c gohtz

  11.10: A string of negligible majwlv* u8vnop8/dwf ,;ij l,of8 6c6cpss 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 hangingipco ,;66 lc,v8luo8jv n dfww8fjp*/ 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 connecteohpl n(51v fh7i+k*g*xwr9x s an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downwa1w*vphkro7n*ih9 fe x5xl+ (g rd 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 f88.kc bv* clkz. td wm)4kp*gare connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceb)d c*4ktm zvg.*cfk8 lk.w 8pleration 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 surface x4of7kba k.)3hcof;qare connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleratioo ;7x3fo4hfa) bk.cqkn 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 horizonte8 ikyt:m3 m0aal frictionless surface are connected by a massless string A. They are pulled horizontam: 8mt03y ekially 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 arek +uy69i-f8f batw f(p in contact on a horizontal frictionless surface. A 36 N constant force is applied to X a- ift8y 9w6bfu+( fkpas 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 string whi p+-ljp7 ,bwf.v/xq1x9kn btciyo ;2dch has a tension of 2.0 N. A force f/tdcx ,i p onqpv+l21yx7-. kbw;9bjF 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 frictionless h*qik4j6. gpbu orizontal surface as shown. 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 d4q.i6b pgjuk* oes the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contactacfi k ed7-*1i on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block c*fa7di1e i k-X exerts onto blockY?

  94.25: One end of a mass v jno8lr4a+bef/w 5l-5:op gqless rope is attached to a mass m; the other end is attached to a mass of 1.5ra8n b+4-pgqoj:5 /follvw e00 kg. The rope 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 hun .m2x xq1j*jxug over a frictionless, massless pulley as shown to the right. What is the approximaq1 *xjxmux2.jte magnitude of the acceleration of the masses?

  02.36: Two masses, m1zv w:i97ox8v w*c69yso- d+svks2 vot and m2, are connected by a 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, m6:c -sy s 9 92 vt*kw7zs+x8oowvvvdio2, 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 2m as s kw( 5/6*dcd mbsqlaf6hown in the diagram at right. When a force F is applied to the large box, both boxes acceleratqwb a(dl5 6/fs k*cdm6e 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. Th7aq ,rayx;q vmh.d+d7e box has an initial speed of 9.0 m/s and rises vertically 2.60 before cdxm+.ryda q a,7;q7vhoming 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 or9 mr qq::c3qinitially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surfq3oqrr :q9cm:ace 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 i,l;uz6nj jmw( ncline has a 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 describes the orientation of the applied force by the person?lu;nw (jz6 m,j The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.