Answered: A 20-kg block is pulled by a horizontal…

A 20-kg block is pulled by a horizontal force F. When the applied force is 30 N the block starts to slide. Find the normal force N and the coefficient of static friction (μs).

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.81P: Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center...

See similar textbooks

Related questions

Q: A horizontal force is acting on a block moving on a rough horizontal surface. The force has the same…

A: Write the expression for the net force acting on the block.

Q: A man in a flat bed truck starts from rest up a hill at an angle of 8 degrees. If he is carrying a…

Q: A crate has a mass of 120kg and the coefficient of static and kinetic friction is 0.60 and 0.50,…

Q: A 150 kg table is resting on 60°sloping floor from vertical axis with coefficient of friction u= 0.6…

Q: A 3 kg box is sliding across a frictionless table at a rate of 5 m/s. It encounters a 35° incline…

Q: Block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P.…

Q: Will the ladder slip? A ladder of length l = 4m rests against a wall at 0 = 60°. Assume that there…

A: From Force Equilibrium we have as follows:

Q: Two blocks A and B, of weight 150 N and 20 N, respectively rest on an inclined plane as shown in…

Q: The block has mass M and rests on a surface for which the coefficients of static and kinetic…

A: Given data as per question M =150 kg k =60 N/s2 T=2FTo just start…

Q: 1. Blocks B has a mass of 20 kg and block C has a mass of 15 kg. The coefficient of static friction…

A: Note:As per our guidelines we are supposed to answer only one question. Kindly repost other…

Q: ) A 1.57 kg block is initially at rest on a horizontal surface. A horizontal force F of magnitude…

A: GivenF=9.68NμS =0.4μK =0.25

Q: Q4.A. An effort F is required just to move a certain body of weight 393 N up an inclined plane of…

A: Since you have uploaded two questions and did not specify which question to be solved, as per the…

Q: A 5-kg block is acted on a 30-N Tensile force that acts 40 degrees from the horizontal. The kinetic…

A: htthtd

Q: Q2/ The crate has a weight of W = 350 lb, and the coefficients of static and kinetic friction are us…

Q: block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P.…

Q: 3. The coefficients of friction between the load A and the bed of the utility vehicle are us = 0.4…

A: Largest forward acceleration of the vehicle for which the load will not slide on the bed is 0.332…

Q: 2. A box of 450N is lying in an inclined plane with angle of 35 degrees. If the applied load to move…

A: from newton's second law Force = mass * acceleration

Q: Q: Block(A) of weight (100kN) is tied to block (B) of unknown weight (WB) through a flexible cable…

A: From the information given, Weight of block A = WA = 100 kN Coefficient of friction for block A = μA…

Q: Determine the force P that will give the body shown in the figure below an acceleration of 6 ft/s^2.…

Q: A and B are homogeneous with 20 kg and 25 Kg mass respectively. The system is subjected to the force…

Q: 3. The coefficients of friction between the load A and the bed of the utility vehicle are us = 0.4…

Q: Q: Block(A) of weight (100KN) is tied to block (B) of unknown weight (WB) through a flexible cable…

A: Given, Weight of block A = WA = 100 kN Coefficient of friction between A and its resting surface =…

Q: The 100 – Ib force acts as shown on a 300 – Ib block placed on an inclined plane. The coefficients…

Q: 1. Assuming F is 90lb, coefficient of static friction: =0.2, and the coefficient of kinetic friction…

A: we have to determine the distance travelled by the box along the plane

Q: Block A weighs 500 N and block B weighs 280 N. Block A is held by a cord fastened to the wall. Force…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A parcel of mass 2 kg is placed on a rough plane inclined at an angle to the horizontal where 5.…

Q: The crate has a weight of W = 350 lb, and the coefficients of static and kinetic friction are μs =…

Q: Block A is sliding down and pulling up both Block B and Block C. Find the accelerations of each body…

Q: The (200 N) block shown in Fig. has impending motion up. the plane caused by horizontal force (P) if…

Q: Two blocks A and B of mass 200 kg and 100 kg respectively are placed in contact with each other as…

Q: Determine the rang of values which the mass mo may have so that the block 150 kg shown in figure…

Q: A 50 kg block rests on a 20° incline plane, as shown in Figure 1. The coefficient of static friction…

Q: Figure Q1 shows a lorry delivering a 250 kg crate and the coefficient of static friction between…

A: as per guideline i have to solve only 1st of yours multiple question ,

Q: The 500KN block shown is in contact with a 45°incline. The coefficient of friction is 0.25.…

Q: A 30° a P. B.

A: Support reaction induce at point C , normal reaction at point B and friction force develop at point…

Q: Find the least value of P required to cause the system of blocks to have impending motion to the…

Q: The ( 200 N) block shown in Fig. has impending motion up. the plane caused by horizontal force (P)…

Q: Figure Q1 shows a lorry delivering a 250 kg crate and the coefficient of static friction between…

A: given; →mass of crate (m)=250kg→coefficient of static friction (μs)=0.4→final…

Q: Figure Q1 shows a lorry delivering a 250 kg crate and the coefficient of static friction between…

A: When there is any relative motion between any two surfaces, there is a force that opposes the motion…

Q: Blocks mj and m2 are connected by a rope as shown in the figure. There is friction between mi and…

A: Knowns; μs, n2, m1, g, and θ Unknowns; P, m2, Ff, and T The FBD of mass m1 is; The FBDof mass m2…

Q: How much force P parallel to the horizontal plane must be applied so that the 100 lb block will be…

A: Answer: The force P that must be applied parallel to the horizontal plane is 25 lb.

Q: 40 kg object is being pushed downwards at an angle of 32° with the horizontal. If the coefficient of…

Q: 67 g bullet moving horizontally hits a 4.1 kg block resting on a rough horizontal table. If the…

Q: Find the smallest time in which a 1200-kg automobile traveling at 90 km/h can be stopped on a…

Q: The block has is about to be set in motion up in the incline. Its impending motion is due to the…

Q: A 25 kg ladder, 4m long, rest on a rough floor and against a vertical wall. The ladder makes an…

Q: According to the figure where a mass M = z/100 kg on the frictionless floor is being pushed by…

A: given; →mass(M)=z100kg→mass (m)=3kg→required force=F→coefficient of static friction…

Q: A 200 lb block is in contact with a plane inclined at 30 degrees to the horizontal. A force P,…

Q: A car is moving at speed of 80 km/h. If the coefficient of kinetic friction between the tires and…

Q: 500 N Block A has a mass 90° of 100 kg and the coefficient of A 30° friction is 0.20. A 450 N…

Question

A 20-kg block is pulled by a horizontal force F. When the applied force is 30 N the block starts

to slide. Find the normal force N and the coefficient of static friction (μs).

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 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 block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.
The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If the force required to start the spool rotating is F = 160 lb, determine the coefficient of friction between the ground and the spool. Neglect the diameter of the spindle compared to the diameter of the spool.
Find the smallest distance d for which the hook will remain at rest when acted on by the force P. Neglect the weight of the hook, and assume that the vertical wall is frictionless.
Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.
The force P applied to the brake handle enables the band brake to reduce the angular speed of a rotating drum. If the tensile strength of the band is 3800 lb, find the maximum safe value of P and the corresponding braking torque acting on the drum. Assume that the drum is rotating clockwise.
Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a) Determine the force P required to pull the roller at a constant speed. (b) What force P would be needed to push the roller at a constant speed?
The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
Find the tension T in the cable when the 180-N force is applied to the pedal at E. Neglect friction and the weights of the parts.
Q: Block(A) of weight (100kN) is tied to block (B) of unknown weight (Ws) through a flexible cable passing over a smooth pulley .The coefficient of friction for block (A) is (0.3) and for block (B) is (0.2).Find the range of the weight of block (B) to remain in static equilibrium. Smooth pulley
Block A weighs 500 N and block B weighs 280 N. Block A is held by a cord fastened to the wall. Force P is applied on B to drag it to the left at constant speed. The coefficient of friction between A and B is 0.30 and that between B and the floor is 0.32. Find the following (a) the normal force exerted by B on A, FNA (b) the tension in the cord attached to A, T (c) the frictional force exerted by B on A, fA (d) the force applied on B, P (e) the frictional force exerted by the ground on B, fB.
Block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P. The coefficient of sliding friction between A and the plane is 0.3. The coefficient of static friction between A and B is 0.4. If A's weight is 200 N and B's weight is 100 N, find the largest value of P so that B does not slip on A.