Question

If the power of a motor is 40 kW, at what speed
can it raise a load of 20,000 N ? ​

Answer 1

Answer

2m/s

Step-by-step explanation:

Power = 40 kW = 40000 W , Force = 20,000 N

As, Power= force x velocity

∴ 40,000 = 20,000 x v

⇒ v = 40,000/ 20,000

⇒ v = 2 m/s

Therefore at the speed of 2 m/s speed can raise a load of 20,000 N.

Hope it helps you

Answer 2

Answer:

2 m/s

Step-by-step explanation:

Power = 40 KW

Power = 40 × 1000 W

Power = 40000 W

Force = 20000 N

Speed/Velocity = ?

Power = Force × Velocity

Velocity = Power ÷ Time

• 40000/20000
• 4/2
• 2

∴ Speed or velocity is 2 m/s.