Question

A bull pulls a plough with a constant force of 2000n along a field through a distance of 10m in 50s . what is the power of the bull?

Answer 1

Answer:-

Given:

Force applied (F) = 2000 N

Displacement / distance (S) = 10 m

Time taken (t) = 50 s.

We know that,

Power (P) = Work done/time taken.

And,

Work done = F * S

So,

⟹ P = (2000) * (10) / 50

⟹ P = 400 Watts

Therefore, the power of the bull is 400 Watts.

Additional Information:

• Power is simply defined as the work done in a unit of time.

• Power = W/t.

• It's S.I unit is J/s or Watt.

• It's C.G.S unit is erg/s.

• Power is a scalar Quantity since it has no direction.

Answer 2

Given:

• Force applied =F = 2000 N
• Displacement / distance =S= 10 m
• Time taken =t = 50 s.

━━━━━━━━━━━━━━━━━

Need to Find:

• The power =?

━━━━━━━━━━━━━━━━━

Solution:

• Work done = F.S
• Power = W ÷ T

━━━━━━━━━━━━━━━━━

Work done

= 2000 × 10 J

= 20,000 J

━━━━━━━━━━

Power = Work done ÷ Time

⟹ P = 20,000÷ 50 watt

⟹ $\red{\bold{\boxed{Power= 400watt}}}$