Answer:
d = 421.83 m
Explanation:
It is given that,
Height, h = 396.9 m
Horizontal speed, v = 46.87 m/s
We need to find the distance traveled by the ball horizontally. Let t is the time taken by the ball. Using second equation of motion for vertical direction. So,
Now d is the distance covered by the cannonball. So,
Hence, this is the required solution.
Answer:
The block's mass should be
Explanation:
Given:
Cart with mass
From the conservation of energy before mass is added,
Where amplitude of spring mass system,
spring constant
Now new mass is added to the system,
Here, given in question frequency is reduced to half so we can write,
Where frequency of system before mass is added,
frequency of system after mass is added.
Therefore, the block's mass should be