Force required to start the roller, Mechanical Engineering

Assignment Help:

Force required to start the roller:

A roller shown in the figure given below is of mass 150Kg. What force T is required to start the roller over block A?

Sol.: Let R be reaction given by block to the roller, and is to act at point A subtends an angle of ? as shown in the figure given below,

For finding angle θ  ,

Sin θ  = 75/175 = 0.428

= 25.37°

Apply lami's theorem at 'A', as the body is in equilibrium

T/sin(90° + 25.37°) = 150 × g/ sin(64.63° + 65°)

T = [150 × g × sin(90° + 25.37°)]/ sin(64.63° + 65°)

T = 1726.33N

 

854_Force required to start the roller.png

 


Related Discussions:- Force required to start the roller

Stress, Difference between direct and shear stress

Difference between direct and shear stress

Illustration of cam, Illustration of CAM A cam rotating at consisted an...

Illustration of CAM A cam rotating at consisted angular velocity operates an oscillating follower. Draw cam profile for the given data: Angular displacement of the follower

Evaluate the shaft diameter, The shaft, as given in Figure is driven by pul...

The shaft, as given in Figure is driven by pulley B from an electric motor. Another belt drive from pulley A is operating a compressor. The belt tensions for pulley A are 1500 N an

Plot the root locus diagram for a system, Plot the root locus diagram for a...

Plot the root locus diagram for a system whose open loop transfer function is Evaluate the range of values for K for system to be stable.

Construct the load displacement diagram, A suspended walkway in an undergr...

A suspended walkway in an underground cavern consists of a deck supported by three tie rods placed symmetrically about the centre as shown below: The rods are each of

Belts, crowning of pulley

crowning of pulley

Find the twist of a circular hollow shaft, Find the twist of a circular hol...

Find the twist of a circular hollow shaft: Discover the twist per metre length of a circular hollow shaft having 120 mm outer diameter and 90 mm inner diameter, respectively,

Maximum slope and maximum deflection, Maximum slope and maximum deflection:...

Maximum slope and maximum deflection: A simply supported beam of span l is subjected to two concentrated loads at one-third span through two supports. Discover the maximum slo

Find power transmitted by cross type belt, Find power transmitted by cross ...

Find power transmitted by cross type belt: Find power transmitted by cross type belt drive connecting two pulley of diameter 45.0cm and 20.0cm that are 1.95m apart. The max

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