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WINSTONCH [101]
3 years ago
15

A light string is wrapped around the edge of the smaller disk, and a 1.50 kgkg block is suspended from the free end of the strin

g. If the block is released from rest at a distance of 2.40 mm above the floor, what is its speed just before it strikes the floor
Physics
1 answer:
Mandarinka [93]3 years ago
6 0

Answer:

The speed of the block before it strikes the floor is 0.217 m/s.

Explanation:

Given;

mass of the block, m = 1.5 kg

height above the ground through the block was released, h = 2.4 mm = 2.4 x 10⁻³ m

The speed of the block before it strikes the floor will be maximum.

Let the speed of the block before it strikes the floor = v

Apply the principle of conservation of mechanical energy to determine the speed of the block.

K.E = P.E

¹/₂mv² = mgh

¹/₂v² = gh

v² = 2gh

v = √2gh

v = √(2 x 9.8 x 2.4 x 10⁻³)

v = 0.217 m/s

Therefore, the speed of the block before it strikes the floor is 0.217 m/s.

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A car is traveling at a constant speed of 33 m/s on a highway. At the instant this car passes an entrance ramp, a second car ent
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Answer:

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Velocity of second car; v2 = 0 m/s (since the second car starts from rest)

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