A setup of two block system is shown in Figure 3 below. Block B weighs 712 N rests on top of a table whose coefficient of static friction between block B and the table is 0.25. What is the minimum weight that block A must have so that block B will remain at rest?  a. 200 N b. 180 N c. 170 N d. 155 N

sonia- m pject Pool partment... 7 1 1329 2 S X 7. A 7.50 kg block is pressed against a vertical wall by a force (F), as shown in the figure below. The coefficient of static friction between the block and the wall is 0.41 and the directional angle 8 for the force is 50.0°. Determine the magnitude of the force (F) when the block is about to slide down the wall. N 3 E D 80 F C $ 4 R F % 5 V T G (2991109 911 6 ccito coi16 MacBook Air 6: B S Y H & 7 S 63 91129 911539115 91109 91103 911931 92 U N 6 ceiloo cc 16 ecil6 ceiló ccrl6 cc 16. c 8 J ció ecil6 ceil D-Il ER 1 M ( 9 K MOSISO O O 4 19 P

ebAssign 110 N 40 ASK YOUR TEACHER 3. DETAILS SERCP11 4.7.P.065.MI. Objects with masses m, = 15.0 kg and m, = 8.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m, falls 1.00 m in 1.78 s, determine the coefficient of kinetic friction between m, and the table. 4. DETAILS SERCP11 5.2.OP.015. ASK YOUR TEACHER A 7.80 g bullet is initially moving at 620 m/s just before it penetrates a block of wood to a depth of 5.80 cm. (a) What is the magnitude of the average frictional force (in N) that is exerted on the bullet while it is moving through the block of wood? Use work and energy considerations to obtain your answer. (b) Assuming the frictional force is constant, how much time (in s) elapses between the moment the bullet enters the block of wood and the moment it stops moving?

The automobile has a mass of 2.2 Mg and center of mass at G. Take u, = 0.3. (Figure 1) Part A Determine the towing force F required to move the car if the back brakes are locked, and the front wheels are free to roll. Express your answer to three significant figures and include the appropriate units. HA ? F = Value Units Submit Request Answer Provide Feedback Figure 1 of 1 G. 0.6 m 0.3 m B A 1m-1.50 m- 0.75 m

A A Your Answer: L1 100 N L2 A rigid mass-less beam rests on two supports as shown. On the beam a force of 145 N is applying at a distance L1 = 0.1 m from support A. Support B is L2 = 1.7 m from the force 145 on the beam. Determine the reaction force at A. B

Closure: A dog walker is trying to control three different dogs. One is pulling N72W with a force of 24 Ibs. A second is pulling S13E with a force of 40 Ibs. The third is pulling S71W with a force of 34 Ibs. VWhat is the magnitude, direction angle and bearing of the force that the dog walker must apply so that she is in equilibrium?