The coefficients of friction are ?? = 0.4 between all
surfaces of contact. Assuming the
pulley is frictionless,
a. Determine the smallest force P required to start the 45-kg block
moving if the cable is
attached as shown.
b. Determine the smallest force P required to start the 45-kg block
moving if the cable is
removed from the blocks. Will block A slip with respect to block B
or will it move
with block B?
Homework Answers
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The coefficients of friction are ?? = 0.4 between all
surfaces of contact. Assuming the
pulley...
Please include fbd The coefficients of friction are 0.4 and 14-0.3 between all surfaces. Determine the...
Please include fbd
The coefficients of friction are 0.4 and 14-0.3 between all surfaces. Determine the smallest force F required to start the 30 kg block moving if cable AB is attached as shown, and 0- 20 k8
The coefficients for friction are m s = 0. 35 and m k = 0. 25...
The coefficients for friction are m s = 0. 35 and m
k = 0. 25 between all surfaces of contact. Determine the
smallest force P required to start the 25-kg block
moving if cable AB (a) is attached as shown, (b)
is removed
15 kg 25 kg BC
The three blocks have weights of WA = 60 lb, WB = 40 lb, and WC...
The three blocks have weights of WA = 60 lb, WB = 40 lb, and WC
= 20 lb. If the coefficients of static friction at the surfaces of
contact are UAB = 0.4, UBC = 0.3, and UCD = 0.2, determine (a) the
smallest horizontal force P needed to move block C, and (b) the
tension in the cable.
Cable attached to the wall and block A a.) P= b.) T = A B Р С D
PLEASE SHOW ALL WORK STEP-BY-STEP AS MUCH AS POSSIBLE 0.75 in 0.75 in. 8.71 A wedge...
PLEASE SHOW ALL WORK STEP-BY-STEP AS MUCH AS POSSIBLE
0.75 in 0.75 in. 8.71 A wedge A of negligible weight is to be driven between two 100- ib blocks B and C resting on a horizontal surface. Knowing that the coeffi- cient of static friction at all surfaces of contact is 0.35, determine the smallest force P required to start moving the wedge (a) if the blocks are equally free to move, (b) if block C is securely bolted to...
6. Two blocks rest in contact with one another on a table. Their masses are mi-2...
6. Two blocks rest in contact with one another on a table. Their masses are mi-2 kg and m2-4 kg. The coefficients of static and kinetic friction are push s-0.40 and k-0.25, respectively. You push horizontally to the right on block 1 as shown in the figure. m2 m1 For parts a and b, you are pushing the blocks at constant velocity a) With what force are you pushing on block 1? b) With what force is block 1 pushing...
Problem 4 (kinetics) The coefficients of friction between blocks A and C and the horizontal surfaces...
Problem 4 (kinetics) The coefficients of friction between blocks A and C and the horizontal surfaces are u, 0.24 and u=0.20. Knowing that mA = 5 kg,mg = 10 kg, and me = 10 kg, determine (a) the tension in the cord, (b) the acceleration of each block. Answers: (a) 33.6 N.(b) a A=4.76 m/s2, ag=3.08 m/s2, and a = 1.4 m/s2
Statics 7.2 The coefficients of friction between the block and the rail are s 0.30 and...
Statics
7.2 The coefficients of friction between the block and the rail are s 0.30 and pk 0.25. Find the magnitude and direction of the smallest force P required: (e) to start the block up the rail, (b) to keep it from moving down. HINT. First, visualize graphically (i.e. make a sketch) how much ? must be for P to be minimum 500 N ANS. (a) P 392 N 51.7 (b) P = 157 N 18.30
Using the coefficients of static friction shown, determine the smallest mass of block A so that...
Using the coefficients of static friction shown, determine the
smallest mass of block A so that it will prevent sliding motion of
B down the plane.
A cable is attached to the 20-kg plate B, passes over a fixed peg at C, and is attached to the block at A. (Figure 1) Figure < 1 of 1 > Mc = 0.3 MA = 0.2 MB = 0.3 30°
Blocks B has a mass of 20 kg and block C has a mass of 15 kg. The coefficient of static friction at the contacting surfaces is 0.2. Block A is suspended by a rope that passes over a fixed cylinder and is attached to block B. The coefficient of static fric
Blocks B has a mass of 20 kg and block C has a massof 15 kg. The coefficient of static friction at thecontacting surfaces is 0.2. Block A is suspended by arope that passes over a fixed cylinder and is attachedto block B. The coefficient of static friction betweenthe rope and the cylinder is 0.25. What is the largestmass block A can have without causing block B to slipthe left?
Please include fbd
The coefficients of friction are 0.4 and 14-0.3 between all surfaces. Determine the smallest force F required to start the 30 kg block moving if cable AB is attached as shown, and 0- 20 k8
The coefficients for friction are m s = 0. 35 and m
k = 0. 25 between all surfaces of contact. Determine the
smallest force P required to start the 25-kg block
moving if cable AB (a) is attached as shown, (b)
is removed
15 kg 25 kg BC
The three blocks have weights of WA = 60 lb, WB = 40 lb, and WC
= 20 lb. If the coefficients of static friction at the surfaces of
contact are UAB = 0.4, UBC = 0.3, and UCD = 0.2, determine (a) the
smallest horizontal force P needed to move block C, and (b) the
tension in the cable.
Cable attached to the wall and block A a.) P= b.) T = A B Р С D
PLEASE SHOW ALL WORK STEP-BY-STEP AS MUCH AS POSSIBLE
0.75 in 0.75 in. 8.71 A wedge A of negligible weight is to be driven between two 100- ib blocks B and C resting on a horizontal surface. Knowing that the coeffi- cient of static friction at all surfaces of contact is 0.35, determine the smallest force P required to start moving the wedge (a) if the blocks are equally free to move, (b) if block C is securely bolted to...
6. Two blocks rest in contact with one another on a table. Their masses are mi-2 kg and m2-4 kg. The coefficients of static and kinetic friction are push s-0.40 and k-0.25, respectively. You push horizontally to the right on block 1 as shown in the figure. m2 m1 For parts a and b, you are pushing the blocks at constant velocity a) With what force are you pushing on block 1? b) With what force is block 1 pushing...
Problem 4 (kinetics) The coefficients of friction between blocks A and C and the horizontal surfaces are u, 0.24 and u=0.20. Knowing that mA = 5 kg,mg = 10 kg, and me = 10 kg, determine (a) the tension in the cord, (b) the acceleration of each block. Answers: (a) 33.6 N.(b) a A=4.76 m/s2, ag=3.08 m/s2, and a = 1.4 m/s2
Statics
7.2 The coefficients of friction between the block and the rail are s 0.30 and pk 0.25. Find the magnitude and direction of the smallest force P required: (e) to start the block up the rail, (b) to keep it from moving down. HINT. First, visualize graphically (i.e. make a sketch) how much ? must be for P to be minimum 500 N ANS. (a) P 392 N 51.7 (b) P = 157 N 18.30
Using the coefficients of static friction shown, determine the
smallest mass of block A so that it will prevent sliding motion of
B down the plane.
A cable is attached to the 20-kg plate B, passes over a fixed peg at C, and is attached to the block at A. (Figure 1) Figure < 1 of 1 > Mc = 0.3 MA = 0.2 MB = 0.3 30°
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