Momentum:
→ Momentum = Mass × Velocity.
→ The SI unit of momentum is kg ms-1 or kg m/s.
→ The dimensional formula of momentum is M L T-1.
Angular momentum:
→ Angular momentum is moment of momentum.
→ S.I unit of angular momentum is kg m2/s or kg m2 s-1.
→ The dimensional formula for angular momentum is M1 L2 T-1.
Force:
→ Force = mass × acceleration or F = ma
→ S.I unit of force is newton.
→ The unit of force is kg m/s2.
→ 1 newton (N) = 1 kg m/s2 or 1 kg m s-2.
→ 1 newton (N) = 105 dyne.
→ The dimensional formula of force is M L T-2.
Work:
→ Work = force × displacement
→ 1 joule (J) = 1 newton-meter (1 N m) = 107 erg.
→ The S.I unit of work is joule.
→ The English physicist James Prescott Joule is known to establish the relationship between mechanical work and heat transfer.
→ James Prescott Joule outlined the basis of the law of conservation of energy.
→ The S.I unit of work, joule (J) is named in honor of the English physicist James Prescott Joule.
Energy:
→ The S.I unit of energy is joule.
→ The dimensional formula of energy is M1 L2 T-2.
Power:
→ The rate of doing work or the rate of transfer of energy is called power.
→
→ or P = E/t
→ S.I unit of power is J/s or W.
→ 1 watt = 1 joule/second.
→ 1 watt = 1 N m/s.
→ The dimensional formula of power is M L2 T-3.
→ 1 horsepower (hp) = 746 watt (W).
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