Suppose that the metal cylinder in the last problem has the mass of 0.10kg and that the coefficient of static friction between the surface and the cylinder

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🗣️ Trương Minh Phú hỏi: Cho mình hỏi một câu Mechanics Baseline Test (MBT) - English bài tập về nhà

Suppose that the metal cylinder in the last problem has the mass of 0.10kg and that the coefficient of static friction between the surface and the cylinder is 0.12. If the cylinder is 0.20 m from the center of the turntable, at what maximum speed v can the cylinder move along its circular path without slipping off the turntable?

(A) 0 < v ≤ 0,5 m/s

(B) 0,5 m/s < v ≤ 1,0m/s

(C) 1,0 m/s < v ≤ 1,5 m/s

(D) 1,5 m/s < v ≤ 2,0 m/s.

(E) 2,0 m/s < v ≤ 2,5 m/s.

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Câu trả lời hay nhất

🕵 Bạn Lê Thị Đức trả lời:

Chọn câu (A): 0 < v ≤ 0,5 m/s

The centripetal force causing the object to move with the turntable is the static friction force. The object doesn't slip off the turntable if the centripetal force does not exceed the maximum static friction, which requires: mv2/R < or = µ mg, which gives 0 < v < or = 0.5m/s.

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Các câu trả lời

👤 Phạm Phương Phú viết:

Chọn C, 1,0 m/s < v ≤ 1,5 m/s

👤 Trần Gia Thành viết:

Chọn D, 1,5 m/s < v ≤ 2,0 m/s.

👤 Lê Khôi Đức viết:

Chọn E, 2,0 m/s < v ≤ 2,5 m/s.

👤 Lê Hải Lộc viết:

Chọn B, 0,5 m/s < v ≤ 1,0m/s

👤 Trần Khánh Dũng viết:

Chọn A, 0 < v ≤ 0,5 m/s

➥ 🗣️ Trương Minh Phú trả lời: Cảm ơn bạn, câu này hình như có trong file doc này Đề của VLTT-03 (Khó và Hay)

👤 Đinh Trí Vĩ viết:

Chọn A: 0 < v ≤ 0,5 m/s

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