A Box (M = 20 Kg) Is Sitting on a Horizontal

question 43

Multiple Choice

A box (m = 20 kg) is sitting on a horizontal surface. It is connected to a massless hook by a light string passing over a massless pulley wheel. The coefficients of friction between the box and the surface are 0.50 (static) and 0.30 (kinetic) . On top of m is a second box M of mass 20 kg. The coefficients of friction between the boxes m and M are 0.80 (static) and 0.60 (kinetic) . How much weight needs to be added to the hook until the box just begins to move.

• A) 10 kg
• B) 98 kg
• C) 20 kg
• D) 16 kg
• E) 200 kg

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Value Chain Management

The strategic analysis and optimization of the series of steps that a company takes to deliver a product or service to the market.

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Project Evaluation and Review Technique, a planning and control tool for managing complex projects.

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The ongoing assessment and examination of data or processes to inform decision-making and improve outcomes.

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The sequence of activities an organization performs to design, produce, market, deliver, and support its product.