Question

= 9.8 cm.
3. Figure (8-W9) shows a loop-the-loop track of radius R.
A car (without engine) starts from a platform at a
distance h above the top of the loop and goes around the
loop without falling off the track. Find the minimum
value of h for a successful looping. Neglect friction.
R
Figure 8-W9​

Answer 1

Answer:

In case of min height:

Velocity at base of loop must be

5gR

⇒mg(R+h)=

2

1

m(5gR)

⇒R+h=2.5R

⇒h=1.5R

Answer 2

Answer:

Explanation:

Mgh=1/2mv^2

Vmin at topmost pt is rootgr

Thus we get h = r/2