Question

Match the column and select the correct answer using the codes given below
Codes :
P Q R S
(A)$2314$
(B)$1423$
(C)$4123$
(D)$2341$

Answer 1

A: $k_r=\frac{1}{2}m\frac{k^2}{r^2}{v}^2{k}_t=\frac{1}{2}m{v}^2\frac{k_r}{k_t}=\frac{k^2}{r^2}=\frac{2}{5}$

B: $t=\sqrt{\frac{h}{gsin\theta }(1+\frac{k^2}{r^2})}\therefore \frac{t_{\alpha }}{t_2}=\frac{\sqrt{2}}{\frac{\sqrt{3}}{2}}=\frac{2}{\sqrt{3}}$

C: slipping in present

$f=\mu N=\frac{f}{N}=\mu =\frac{1}{4}$

D: $\frac{k_t}{totalk}=\frac{1}{1+\frac{k^2}{r^2}}=\frac{5}{7}$