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disa [49]
2 years ago
11

why is a train more difficult to stop then a rolling ball even if they are traveling at the same speed? URGENT

Physics
1 answer:
zloy xaker [14]2 years ago
5 0
Think of the formula force=mass x acceleration. even though they have the same acceleration, a train has more mass. is that helpful?
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Answer:

Explanation:

The mass of the block is 0.5kg

m = 0.5kg.

The spring constant is 50N/m

k =50N/m.

When the spring is stretch to 0.3m

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The spring oscillates from -0.3 to 0.3m

Therefore, amplitude is A=0.3m

Magnitude of acceleration and the direction of the force

The angular frequency (ω) is given as

ω = √(k/m)

ω = √(50/0.5)

ω = √100

ω = 10rad/s

The acceleration of a SHM is given as

a = -ω²A

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a = -30m/s²

Since we need the magnitude of the acceleration,

Then, a = 30m/s²

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ΣFnet = ma

Fnet = 0.5 × -30

Fnet = -15N

Fnet = -15•i N

The net force is directed to the negative direction of the x -axis

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