Home

Join Our Socials

Telegram Group
Join Community
Twitter Group
Pinterest Group
Facebook Group
Subscribe YouTube

What is the correct answer?

4

In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

A. P = W tan (α - φ)

B. P = W tan (α + φ)

C. P = W tan (φ - α)

D. P = W cos (α + φ)

Correct Answer :

B. P = W tan (α + φ)


Share this question with your friends
Show all Engineering Mechanics MCQ

Please do not use chat terms. Example: avoid using "grt" instead of "great".

Submit
Load More..

Related Questions

The possible loading in various members of framed structures are When a rigid body is suspended vertically, and it oscillates with a small… In a framed structure, as shown in the below figure, the forces in the… The velocity ratio of a simple wheel and axle with D and d as the diameters… Moment of inertia of a hollow circular section, as shown in the below… The centre of gravity a T-section 100 mm × 150 mm × 50 mm… The force, by which the body is attracted, towards the centre of the earth,… Lami's theorem states that The unit of angular velocity is Which of the following is an equation of linear motion? (where, u and… If tension in the cable supporting a lift moving downwards is half the… Three forces acting on a rigid body are represented in magnitude, direction… Which of the following statement is correct in connection with projectiles? The forces, which meet at one point, but their lines of action do not… When the lift is moving upwards with some acceleration, the pressure exerted… The periodic time of a particle with simple harmonic motion is __________… Moment of inertia of a triangular section of base (b) and height (h) about… The unit of force in S.I. units is The resultant of two equal forces P making an angle θ, is given by When a body falls freely under gravitational force, it possesses __________… Mass moment of inertia of a thin rod about its one end is __________ the… The rate of change of momentum is directly proportional to the impressed… In order to determine the effects of a force, acting on a body, we must… A ladder is resting on a smooth ground and leaning against a rough vertical… Moment of inertia of a rectangular section having width (b) and depth… Non-coplanar concurrent forces are those forces which The resolved part of the resultant of two forces inclined at an angle… If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies,… The velocity ratio of a single purchase crab winch can be increased by Which of the following is not the unit of work, energy and heat?

Also checkout

C++ Programming MCQ Puzzle MCQ Line Graph MCQ General Physics MCQ Wound Repair And Care MCQ Rearrangement Set 14 MCQ Artificial Intelligence MCQ Rearrangement Set 6 MCQ Partnership MCQ Current Affairs April 2017 MCQ Current Affairs December 2022 MCQ AP Studio Art 2D Design MCQ