Answer:
The beam of light is moving at the peed of:
km/min
Given:
Distance from the isalnd, d = 3 km
No. of revolutions per minute, n = 4
Solution:
Angular velocity, (1)
Now, in the right angle in the given fig.:
Now, differentiating both the sides w.r.t t:
Applying chain rule:
Now, using and y = 1 in the above eqn, we get:
Also, using eqn (1),
Answer:
1974.4328 m/s²
Explanation:
r = Radius = 0.5 m
t = Time taken = 0.1 second
Rotational speed
The centripetal acceleration is given by
The centripetal acceleration of the rock is 1974.4328 m/s²
It could possibly melt things