Question

A body of mass $2\, kg$ is initially at rest It starts moving unidirectionally under the influence of a source of constant power P Its displacement in $4 s$ is $\frac{1}{3} \alpha^2 \sqrt{P} m$ The value of $\alpha$ will be_______

Answer 1

The correct answer is 4.
21​mV2=Pt
V=m2Pt​​
dtdx​=m2Pt​​
x=m2P​32​​[t3/2]04​
x=316P​​=31​×16P​
α=4