Evan Toh
2020PPp1q9 moments – Find force P acting on stick by shoulder
Using the concepts that POM, we know 1) Ma = Mc 2) net force on the stick is 0N. Most of us will most likely to take pivot about P as...
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Evan Toh
Oct 160 min read
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Evan Toh
Oct 161 min read
Balancing Toys
There are two main types of balancing toys. Type 01: CG below the pivot point Type 02: CG above the pivot
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Evan Toh
Oct 161 min read
Turning Effect of Forces – Basic Concepts
This video goes through the basic concepts that is required for moment questions. Go through the whole video to have know the different...
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Evan Toh
Dec 31, 20231 min read
Two conditions for a body to be in equilibrium
When a system is in equilibrium , 2 conditions are met. 1) Principle of Moment (POM): Sum of anticlockwise moment = Sum of clockwise...
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Evan Toh
Dec 31, 20232 min read
2013SPp2q9 – Pressure and Moment
Solutions: (a) (i) A bigger force than F can be obtained due to the lever system and hydraulic system . Lever system: Applying...
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Evan Toh
Dec 31, 20231 min read
Double Pivots Question
A man is standing on a uniform plank of mass 20 kg and 6 m long. He is standing 1 m from the string at A. a) Find the unknown forces FA...
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Evan Toh
Dec 1, 20231 min read
Boy on spring board - Moments Question using Simultaneous Equations
Note: Non-uniform plank means the CG of the plank is not at its centre a) Find the weight of the boy. b) How far is the centre of gravity...
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Evan Toh
Nov 30, 20231 min read
Minimum force to lift a drum over a step (different examples)
Given that the mass of the drum is 20 kg. What is the minimum force, F, required to just movee th drum off the ground? (Assume uniform...
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Evan Toh
Nov 30, 20230 min read
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