two workers use 100 n of force to move a sofa 2 meters in 2 seconds. how much power is required? 400 watts…
two workers use 100 n of force to move a sofa 2 meters in 2 seconds. how much power is required? 400 watts 100 watts 50 watts 104 watts
Answer
Explanation:
Step1: Calculate work done
Work $W = F\times d$, where $F = 100$ N and $d=2$ m. So $W=100\times2 = 200$ J.
Step2: Calculate power
Power $P=\frac{W}{t}$, where $W = 200$ J and $t = 2$ s. So $P=\frac{200}{2}=100$ W.
Answer:
B. 100 watts