96.30: An 800-kg elevator acce ,/x9mznik+,(k * eqfr)l wz9y;lqnsx lerates 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 the q6uepa4n45;f q*fh0+l caru4fi9p t kinstant the elevator has a downward acceleration ofef45pka nau*tp; 4l qcfhq+94u6r0 fi $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a b .-t ,lqtza*trathroom scale in the school’s elevator. When the scale reads 520 ,ttzra -l* .qtN, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are xk5ne 2 7a :obgt5wau7“weightless” because

  06.16: A scientist in the International Space Station experiences " /fvy5s0 gx w9iak;drpv+.*meweightlessness" becausyawdg.kr; 9xv 5ev*misf+ p0/ e

  11.10: A string of negligible mass connects an object of mass M=10 kg tp a/km9g27 ybmemr(porr9 *4po the ceiling of an elevator. The elr(*grm9yp29bm mk7 /raoe pp4evator 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 l+1l 6eakc+wvconnects an object of mass M=10 kg to the ceiling of an elevator. The elel6l1+ek+ a vwcvator 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 k6wi aq s.8:udx) yl2jbg mass on a horizontal frictionless surface are connected by2udqjx)sw y i: a86b.l 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,os , +l0n;ufyppmy+e 2yp4pr a 4 kg mass on 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 constant accelerations ; ru0,,ml+ey+pyopfpp4 2ny 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 k -ns0d(icfg*ol8 qc: hg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a seco( q o8s-:c dh0gnl*icfnd 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 friwt gt; +)in5hja1*v jfctionless surface. A 36 N constant force is applied to X as shown to the rightn1j+f hva5w *)tij;t g. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are covr0y xc4 ) fm9 bsot5f,)p/vyrnnected by a string which has a tension of 2.0 N. A force F acts in the direction shm)0y5/ 4 ff cb rsyx),9trvopvown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the s 8 lcvg82gg,cright on a frictionless horizontal surface as shown. The larger box has asg,2g8 vgcl8 c 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 arervi; nu osvjcd c)+3+.9yk5g l in contact on a frictionless horizontal surface. A consko3v gvuid.clsj+ )5 +yn9rc;tant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massleai:p 4d/e+v kwss rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompa ae+pwdi k4:/vnying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.u o/r5j9yqj / lgq+ynng56 8iia5t)j f5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate yg/) qa5nt 58y 9ljfjg+njiuq5/o 6ir magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and 2a/q y;l *+g8fqe -v0nlt asyaarranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 +ay 28;lqav sy-qeg*0 la/ntfhanging 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 isplaced on top of a larger box of mass :j-y s u6/-kyl;xsov s--hwo w2m 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 acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating t-you v s/6okxhws;sjw- -:-lyhe smaller mass?

  17.25: A box slides with und0id 1fcf8fr 8iform acceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest8i01fdrf f cd8. 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 i:k 2kszqs9 m*7gcyh 9 xev0ttzv8gy;69nu3vmis initially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed g9 ; nu8vext39*97iz2chzmyvtqk:6g0v sk ysto 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 incli b l1r+kl1emc2ne 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 th1k e1rb lc2ml+e following choices best describes 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.