CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A particle moves with a velocity $$\bar{v} = (5\hat{i} - 3\hat{j} + 6\hat k)$$ m/s, under the influence of a constant force $$\vec{F} = (10 \hat{i} + 10 \hat{j} + 20 \hat{k})N$$. The instantaneous power applied to the particleis:


A
200 J/ s
loader
B
40 J/s
loader
C
140 J/s
loader
D
170 J/s
loader

Solution

The correct option is B 140 J/s
We know that power is defined as:
$$P=\vec F\cdot \vec v$$
Putting values will get,
$$P=(5\hat{i}-3\hat{j}+6\hat{k})\cdot(10\hat{i}+10\hat{j}+20\hat{k})$$

$$P=50-30+120=140 J/s$$

Physics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image