mechanics Flashcards
1
Q
What is the phase difference between the variation of displacement with time and the variation of acceleration with time for the body?
A
π rad
2
Q
Explain what is meant by specific latent heat of fusion
A
Specific latent heat of fusion is the energy required to change 1 kg of material from the solid state to the liquid Without a change of temperature or at the freezing/melting temperature/point
3
Q
State two necessary conditions for the beam to be in equilibrium
A
- resultant force=0
2. anticlockwise moments=clockwise moments
4
Q
what is centre of mass?
A
the point on an object through which the weight acts
