Velocity acquired by block - system released from rest, Mechanical Engineering

Assignment Help:

Velocity acquired by block - system released from rest:

Two blocks shown in the figure given below, have masses A = 20N and B = 10N and the coefficient of friction between the block A and the horizontal plane, μ = 0.25. If the system is released from rest, and block B falls through vertical distance of 1m, what is velocity acquired by it? Neglect friction in pulley and extension of string.

Sol: Let T = Tension on both sides of the string.
a = Acceleration of the blocks
μ= 0.25 Consider the motion of block B,

531_Velocity acquired by block - system released from rest1.png

 

449_Velocity acquired by block - system released from rest.png

Consider motion of block A, T -  μWA = ma

T - 0.25 X 20 = (20/g)a                                                                                                                               ...(2)

By adding equation (1) and (2)

10 - 5 = (30/g)a

a = 1.63 m/sec2                                                                                                                                    ...(3)

By using the relation, v2  = u2 + 2as

v2 = 0 + 2X 1.63 X 1

v = 1.81m/sec                                                                  .......ANS

 


Related Discussions:- Velocity acquired by block - system released from rest

Explain the hydraulically extendible, Explain the Hydraulically extendible ...

Explain the Hydraulically extendible Most paver manufacturers have developed hydraulically extendable paver screeds hat trail the primary or basic screed on the paver. One make

Feeler gauge-measuring tools , Feeler Gauge: It is used to measure minor c...

Feeler Gauge: It is used to measure minor clearances. Feeler gauges come in set of a few blades of different thickness as shown in Figure. It is used to measure the spark plug gap

Mechanical element for friction decreasing, Present and talk about the bear...

Present and talk about the bearing, a typical mechanical element for friction decreasing. Complete Table  Q2 about benefits,disadvantages and examples of applications of the follow

Titanium alloys, Titanium Alloys Pure titanium is a light weight and s...

Titanium Alloys Pure titanium is a light weight and strong ductile metal. This is very strong and as well as highly resistant to corrosion of all kinds but has the drawback su

Difficulties with motion sickness, In designing rotating space stations to ...

In designing rotating space stations to give for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the neg

Theory of constraints, Theory of Constraints: Goldratt's theory of con...

Theory of Constraints: Goldratt's theory of constraint has attracted the attention of several practioners in the industry. His concept of goal, constraint, and throughput, cri

Describe facing material, Q. Describe facing material? Facing Material...

Q. Describe facing material? Facing Materials: These materials when added to the moulding sand tend to obtain smoother and cleaner surfaces of castings, help easy peel

Angle of projection, A ball is thrown from a point with a speed V  at an an...

A ball is thrown from a point with a speed V  at an angle of projection  θ . From the same point and  at the same instant, a person starts running with a constant speed V/2 to catc

Aeronautical engineering, Aeronautical engineering is a branch of aerospace...

Aeronautical engineering is a branch of aerospace engineering, thus some people use the 2 terms interchangeably. It is also sometimes considered that aeronautical engineering cover

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd