Answers>Maths>A Level>Article

A 2.4 m long plank of mass 20kg has 2 pins, each 0.5 meters from each respective plank end. A person of mass 40kg stands on the plank 0.1m from one of the pins. Calculate the magnitude of reactions at the pins for this structure to be in equilibrium.

1.) draw what is happening: 2.)Notice key points of questions: Plank is in equilibrium. This means that all forces=0 and all moment=03.) Apply force equilibrium: 4.) Apply moment equilibrium5.) final answer is R₁=462N and R₂=126N.

Answered by Samuel T. • Maths tutor

3388 Views

See similar Maths A Level tutors

A 2.4 m long plank of mass 20kg has 2 pins, each 0.5 meters from each respective plank end. A person of mass 40kg stands on the plank 0.1m from one of the pins. Calculate the magnitude of reactions at the pins for this structure to be in equilibrium.

Related Maths A Level answers

y = 4x^3 - 5/x^2 find dy/dx

how can differentiate using the product and chain rule? e.g y=(4x+1)^3(sin2x), find dy/dx.

Solve the following equation: 4(sinx)^2+8cosx-7=0 in the interval 0=<x=<360 degrees.

Find the integral of: sin^4(x)*cos(x)dx