The 40-kg disk is rotating at e = 100 rad/s. When the force Pis applied to the brake as indicated by the graph. If the cocfficient of kinetic friction at B is pe= 0.3, determine the time t needed to stay the disk from rotating. Neglect the thickness of the brake.

The 40-kg disk is rotating at e = 100 rad/s. When the force Pis applied to the brake as indicated by the graph. If the cocfficient of kinetic friction at B is pe= 0.3, determine the time t needed to stay the disk from rotating. Neglect the thickness of the brake.

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

See similar textbooks

Related questions

Q: If the slender-bar assembly is released from rest while in the horizontal position shown, determine…

A: Given:- b=250mm ρ=1.39kg/m To find: Angular acceleration

Q: 4. The pipe has a mass of 600 kg and is being towed behind a truck. If the angle 0 = 30°, determine…

Q: F17-4. Determine the maximum acceleration of the truck without causing the assembly to move relative…

Q: Determine the initial angular acceleration of the 25-kg ladder and the initial reactions at A and B…

Q: Q3: The tire has a weight of 30 lb and a radius of gyration kg = 0.6 ft. If the coefficients of…

Q: The spring-held follower AB has a mass of 0.5 kg and moves back and forth as its end rolls on the…

Q: R17-8. Determine the backspin w which should be given to the 20-lb ball so that when its center is…

Q: 17-105. If the coefficient of static friction between the 50-lb roller and the ground is u, = 0.25,…

Q: The block A has a mass of m= 120kg, if the force F = (100t²) N. Find the acceleration of the block…

Q: Two bodies A and B, each weighing 96.6 lb, are connected by a rigid bar of negligible weight…

A: Given: The weight of each body, W = 96.6 lb The friction coefficient, f = 0.268

Q: If the 50-kg wooden box was pulled from rest to a distance of 6 m up an inclined plane, determine…

Q: 17-111. The semicircular disk having a mass of 10 kg is rotating at w = 4 rad/s at the instant 0 =…

Q: The 6-kg homogeneous sphere is released from rest on the ramp. If 0 = 30°, r = 0.2 m, μs = 0.4, and…

A: To find: The acceleration of centre of mass G and the friction force by the ramp on the sphere.…

Q: that breaks when its tension is T=1N. At time t=D0, 0 = 0. The plates rotate with a constant angular…

A: Given data : The mass of the body = 1kg The distance from A to the block = 1m The angular…

Q: 17-43. Determine the acceleration of the 150-lb cabinet and the normal reaction under the legs A and…

A: Weight of the cabinet (W) = 150 lb P = 35 lb the free body diagram of the cabinet is shown below…

Q: The horizontal force P 421 N. Determine the normal reaction forces at A and B. The mass of the…

Q: The spool has a mass of 150 kg and a radius of gyration of Kc = 240 mm about its centre of mass G.…

Q: The forklift travels forward with a constant speed of 0.27 m/sec. Determine the maximum deceleration…

Q: The 150-lb man lies against the cushion for which the coefficient of static friction is Hiy = 0.5.…

A: Given, W=150 lbμs=0.5v=30 ft/s

Q: velocity of 34 rad.s1. Disk E has a weight of 65 lb : is initially at rest when it is brought into…

A: There are two types of forces that are acting on a circular surface. One type of force is Radial…

Q: *17-44. The uniform bar of mass m is pin connected to the collar, which slides along the smooth…

A: Draw the FBD for the given problem. Let θ be the angle made by the rod and L be its length. Write…

Q: *17-108. The semicircular disk having a mass of 10 kg is rotating at w = 4 rad/s at the instant e =…

A: Draw the free body diagram of the disc: Calculate moment of inertia about the center of gravity:…

Q: The uniform crate has a mass of 50 kg and rests on a cart that has an inclined surface as shown. The…

Q: 18-43. A uniform ladder having a weight of 30 lb is released from rest when it is in the vertical…

A: Given data

Q: The pipe has a mass of 800 kg and is being towed behind a truck. If the angle 6 = 30°, determine the…

A: Given Data The mass of the pipe is: m=800 kg The angle is: θ=30° The coefficient of kinetic…

Q: *14-28. The 10-1b box falls off the conveyor belt at 5-ft/s. If the coefficient of kinetic friction…

A: Given Data: The weight of box is W =10 lb. The velocity of box at A is vA = 5 ft/s. Coefficient of…

Q: If the 50-kg load A is hoisted by motor M so that the load has a constant velocity of 1.5 m/s,…

Q: The weight of the spring held follower AB is 0.375 kg and moves back and forth as its end rolls on…

Q: R17-3. The car has a mass of 1.50 Mg and a mass center at G. Determine the maximum acceleration it…

A: Given, Mass m = 1.5 Mg = 1500 kg g = 9.81 m/s2 Distance between G and road c = 0.4 m Perpendicular…

Q: The coefficients of static and kinetic friction between the drum and brake bar are μS= 0.4 and μK=…

A: Given The coefficient of static friction is μs=0.4. The coefficient of kinetic friction is μK=0.3.…

Q: (a) The sports car, having a mass of 1900 kg, travels horizontally along a 20° banked track which is…

A: Drawing the FBD of the given diagram, We have selected two planes one is in a vertical direction…

Q: If the coefficient of static friction between the 50-lb roller and the ground is u, = 0.25,…

A: Given data: Mass of the roller, m = 50 lb Coefficient of friction, µs = 0.25 The free body diagram…

Q: The double inclined plane supports two blocks A and B, each having a weight of 7 lb as shown below.…

A: determine the acceleration of each block.

Q: 4.) The 300 kg car travels down the 15 degrees inclined road at a speed of 50 km/hr. If the driver…

Q: The 40-kg disk is rotating at = 100 rad/s. When the force P is applied to the brake as indicated by…

A: Given data: Mass of the disk, m = 40 kg Radius of the disk, r = 150 mm Angular velocity ω = 100…

Q: The dragster has a mass of 1500 kg and a center of mass at G. If no slipping occurs, determine the…

Q: The horizontal force P 50 N is applied to the upper block with the system initially stationary. The…

Q: The sports car, having a mass of 1600 kg is travelling horizontally along a 20° banked track which…

Q: If the 200-lb uniform crate is subjected to a 80-lb force as shown, determine the state of motion of…

Q: If the coefficient of static friction between the 50-lb roller and the ground is p, = 0.25,…

Q: The coefficients of static and kinetic friction between the drum and brake bar are us= 0.4 and Hk=…

A: GIVEN:Coefficient of kinetic friction μk=0.3 Coefficient of Static friction μs=0.3 M=50 Nm P=85 N…

Q: The coil has a mass of 90 kg and a rotating radius of 0.3 m. If the static and kinetic friction…

Q: The spool has a mass of 500 kg and a radius of gyration kg = 1.30 m. It rests on the surface of a…

A: given: M = 500 kg k G = 1.3 m

Q: The weight of the spring held follower AB is 0.381 kg and moves back and forth as its end rolls on…

Q: Q5: The 15 kg cylinder rotates with an angular velocity of 40 rad/s. If a force F = 6 N is applied…

Q: Q4. The ( 25 kg ) block is moving down the incline surface with an acceleration of (a 6 m/ sec").…

A: Acceleration It is nothing but the rate of change of velocity perpendicular to the plane or curve.…

Q: If the cord is subjected to a horizontal force of P = 146 N, and the gear is supported by a fixed…

Q: If the 50 kg crate starts from rest and covers a distance of 7.8 meters upward in 4 seconds on a…

Q: The 10-lb block A prevent the 20-lb B from falling as shown. If the coefficient of kinetic friction…

Q: F13–7. The block rests at a distance of 2 m from the center of the platform. If the coefficient of…

A: The distance between the block and the center of the platform is, R=2 m The coefficient of friction…

Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

The 40-kg disk is rotating at e = 100 rad/s. When the force
Pis applied to the brake as indicated by the graph. If the
cocfficient of kinetic friction at B is pe= 0.3, determine
the time t needed to stay the disk from rotating. Neglect the
thickness of the brake.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 7 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The 10-lb block A travels to the right at va= 2 ft/sec at the instant shown. If the coefficient pf kinetuc friction is uk = 0.2 between the surface and A, determine the velocity of A when it has moved 4ft Block B has a weight of 20 lb. (Unit in m/sec)
A brake mechanism is used to lower body A with a constant velocity of 3.0 m/s. The coefficient of friction between the brake and drum D is 0.40. Neglect the weight of the brake. Determine the mass of body A and the power dissipated by the brake. (hint: the normal force between the brake the and disk is not 1200 N)
The 20-N force makes the 5-kg block move to the right with a constant velocity of 2 m/s. Calculate the coefficient of kinetic friction between the block and the floor
If the 40kg box is moving with 1 m/s^2 acceleration to the right, determine the magnitude of normal force acting on the box, if F is 174 N. The coefficient of kinetic friction between the box and the ground is 0.3.
The spring-held follower AB has a mass of 0.5 kg and moves back andforth as its end rolls on the contoured surface of the cam, where r = 0.15 m and z =(0.02 cos 2θ) m. If the cam is rotating at a constant rate of 30 rad/s, determine theforce component Fz at the end A of the follower when θ = 30°. The spring isuncompressed when θ = 90°. Neglect friction at the bearing C.
The smooth surface of the vertical cam is defined in part by the curve r =(0.2 cos θ + 0.3) m. The forked rod is rotating with an angular acceleration of 2rad/s^2, and when θ = 45° the angular velocity is 6 rad/s. Determine the force the camand the rod exert on the 2-kg roller at this instant. The attached spring has a stiffnessk = 100 N/m and an unstretched length of 0.1 m.
The trailer with its load has a mass of 200 kg and a center of mass at G. If it is subjected to a horizontal force of P = 1000 N, determine the trailer’s acceleration and the normal force on the pair of wheels at A and at B. The wheels are free to roll and have negligible mass.
The conveyor belt delivers each 12-kg crate to the ramp at A such that the crate’s speed is vA = 2.5 m>s,directed down along the ramp. If the coefficient of kinetic friction between each crate and the ramp is mk = 0.3,determine the smallest incline u of the ramp so that the crates will slide off and fall into the cart
The 8-kg block is moving with an initial speed of 5 m/s. If the coefficient of kinetic friction between the block and plane is μk=0.25, determine the compression in the spring when the block momentarily stops.
If the 50-kg load A is hoisted by motor M so that the load has a constant velocity of 1.5 m/s, determine the force (T) of the cable connected directly on the block.
Just like the change in momentum over time generates a force (P=F) , the change in ∆t angular moment results in a torque (L = τ) . Using the theoretical values for the moments∆tof inertia of the hollow cylinder and disk, determine the torque done on the system whenthe cylinder is dropped on the disk. Take ωi = 9.5 rd/s, ωf = 6.1 rd/s, and ∆ t = 2 s
The car has a mass of 2000kg. Determine the shortest time it takes for it to reach a speed of 90 km/hr, starting from rest, if the engine drives the front wheels, whereas the rear wheels are free rolling. The coefficient of friction between the wheels and road is s=0.4, k=0.3. Neglect the mass of the wheels. What are the reactions at the front and rear wheels while the car is accelerating