When the 8-kg box reaches point A it has a speed VA= 10 m/s. (Eigure 1) Figure 1 of 1 ▼ Part A Determine the normal force the box exerts on the surface when it reaches point B. Neglect friction and the size of the box. Express your answer to three significant figures and include the appropriate units. N = 70.2 Submit N Provide Feedback Previous Answers Request Answer ? X Incorrect; Try Again; 14 attempts remaining Review Next >

When the 8-kg box reaches point A it has a speed VA= 10 m/s. (Eigure 1) Figure 1 of 1 ▼ Part A Determine the normal force the box exerts on the surface when it reaches point B. Neglect friction and the size of the box. Express your answer to three significant figures and include the appropriate units. N = 70.2 Submit N Provide Feedback Previous Answers Request Answer ? X Incorrect; Try Again; 14 attempts remaining Review Next >

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Q1
The 20-kg crate is lifted by a force of F = (100 + 5t²) N, where t is in seconds. (Figure 1) Figure H B 1 of 1 Part A Determine how high the crate has moved upward when t = 2.5 s, starting from rest. Express your answer to three significant figures and include the appropriate units. S = Value Submit Provide Feedback Request Answer Units ? Next >
If the uniform cabinet has weight of 200 lb, and the coefficient of static friction between the cabinet and the ground is g = 0.14, determine the minimum force P that can make the cabinet slide. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point and proper unit. Take g = 32.2 ft/s². Your Answer: Answer P 4 ft units A -1 ft-1 ft- 3.5 ft B
The 2-kg spool S fits loosely on the inclined rod for which the coefficient of static friction is μg = 0.34. (Figure 1) Figure A 0.25 m 5 1 of 1 Part A If the spool is located 0.25 m from A, determine the maximum constant speed the spool can have so that it does not slip up the rod. Express your answer to three significant figures and include the appropriate units. V = Value Submit μA Provide Feedback Request Answer Units
A cone clutch is drawn showing the mating surfaces. Assume that the mating parts are forced into contact with a normal pressure on the mating surfaces of 10 psi. The area of contact is the product of the 2 inches dimension and the mean circumference of the mating parts, that is, 2 × π × 8. The total normal force in pounds is 10 times the area just found. If the coefficient of friction is 0.35, determine the force of friction between the mating surfaces. Give solution. (Ans. F=176 lb)
QUESTION 2 Determine the value of P just sufficient to start the 920 wedge under the W lb blue block. The angle of friction is p for all contact surfaces. Neglect the weight of the orange block. The surface numbers are in light green highlight F2 = F3 = P P = 01 02 W ❤ 45 15 300 18 Answer in three (3) decimal places including zeros F1 = lb lb lb 2 lb 3 deg deg lb deg 02 01
The 60-kg crate shown in (Figure 1) starts from rest and attains a speed of 6 m/s when it has traveled a distance of 15 m. The coefficient of kinetic friction between the crate and the ground is μ = 0.3. Figure 1 of 1 (> ▲ Part A Determine the force P acting on the crate. Express your answer to three significant figures and include the appropriate units. P= DH μA 6 Submit Value Provide Feedback Request Answer Units ?
A block having a mass of 60kg is subjected to a force, P =337.5N acting 53 degrees from the horizontal that causes it to have an acceleration of 1.2m/s2. Determine the coefficient of kinetic friction.NOTE: use 3 decimal places
The coefficient of static friction between the 200-kg crate and the flat bed of the truck is 0.25. (Figure 1) Figure 1 of 1 Part A Determine the shortest time for the truck to reach a speed of 65 km/h, starting from rest with constant acceleration, so that the crate does not slip. Express your answer to three significant figures and include the appropriate units. HÅ t = Value Submit Provide Feedback Request Answer Units ? Next >
A box with mass m = 2.75 kg rests on the top of a table. The coefficient of static friction between the box and the table is μs = 0.71 and the coefficient of kinetic friction is μk = 0.34. Write an expression for Fm the minimum force required to produce movement of the box on the top of the table. Solve numerically for the magnitude of the force Fm in Newtons. Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Solve numerically for the acceleration, a in m/s2.
Solve fast Urgent.
The 2-kg spool S fits loosely on the inclined rod for which the coefficient of static friction is μ = 0.20. (Figure 1) Figure Part A V = If the spool is located 0.25 m from A, determine the maximum constant speed the spool can have so that it does not slip up the rod. Express your answer to three significant figures and include the appropriate units. PμÅ Value Submit A Request Answer 0.25 m Units 1 of 1 ] ?