Question

A man weighing 600 N carries a load of 150 N up the stairs 6 m high in 15 seconds. His power will be:

• A. $290W$
• B. $350W$
• C. $300$W
• D. $200W$

Answer 1

The correct option is C $300$W

Work-done is given by,
$W=\overrightarrow{F}\cdot \overrightarrow{s}=750\times 6$
$P=W/t=750\times 6/15=300W$