Rotational Motion Question 218
Question: A toy car rolls down the inclined plane as shown in the fig. It loops at the bottom. What is the relation between H and h?
Options:
A) $\frac{H}{h}=2$
B) $\frac{H}{h}=3$
C) $\frac{H}{h}=4$
D) $\frac{H}{h}=5$
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Velocity at the bottom and top of the circle is $\sqrt{5gr}$ and $\sqrt{gr}$.
Therefore $(1/2)M(5gr)=MgH$
And
$\text{(1}/2\text{)}M(gr)=MgH$.
