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algol [13]
3 years ago
10

100 POINTS. PLEASE EXPLAIN YOUR ANSWER.

Physics
1 answer:
Drupady [299]3 years ago
6 0

Explanation:

Draw free body diagrams for each mass.

There are 3 forces on the disk: weight force mg pulling down, normal force N pushing up, and tension force T pulling right.

There are 2 forces on the cylinder: tension force T pulling up and weight force 3mg pulling down.

Sum of forces on the disk in the centripetal direction:

∑F = ma

T = m v²/r

Sum of forces on the cylinder in the vertical direction:

∑F = ma

T − 3mg = 0

T = 3mg

Substituting:

3mg = m v²/r

3gr = v²

v = √(3gr)

Plug in values:

v = √(3 × 10 m/s² × 0.800 m)

v = √24 m/s

v ≈ 4.90 m/s

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Answer:

T1 = 130N, T2 = 370N

Explanation:

In order for the system to be at rest, the sum of all forces must be zero and the torque around a point on the beam must be zero.

1. forces:

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2. torque around the center point of the beam:

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