Questions from Modern Physics


Q: A 2.00-kg box is suspended from the end

A 2.00-kg box is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time...

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Q: If work W is required to stretch a spring a distance x

If work W is required to stretch a spring a distance x from its un stretched length, what work (in terms of W) is required to stretch the spring an additional distance x?

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Q: A 3.00-kg box that is several hundred meters

A 3.00-kg box that is several hundred meters above the earth’s surface is suspended from the end of a short vertical rope of negligible mass. A time-dependent upward force is applied to the upper end...

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Q: A 5.00-kg box sits at rest at the

A 5.00-kg box sits at rest at the bottom of a ramp that is 8.00 m long and is inclined at 30.0o above the horizontal. The coefficient of kinetic friction is

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Q: Two boxes connected by a light horizontal rope are on a horizontal

Two boxes connected by a light horizontal rope are on a horizontal surface (Fig. E5.37). The coefficient of kinetic friction between each box and the surface is

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Q: A 6.00-kg box sits on a ramp that

A 6.00-kg box sits on a ramp that is inclined at 37.0° above the horizontal. The coefficient of kinetic friction between the box and the ramp is

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Q: An 8.00-kg box sits on a ramp that

An 8.00-kg box sits on a ramp that is inclined at 33.0° above the horizontal. The coefficient of kinetic friction between the box and the surface of the ramp is

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Q: In Fig. P5.74,

In Fig. P5.74,

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Q: You place a book of mass 5.00 kg against a

You place a book of mass 5.00 kg against a vertical wall. You apply a constant force

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Q: Block A in Fig. P5.76 weighs 60.0

Block A in Fig. P5.76 weighs 60.0 N. The coefficient of static friction between the block and the surface on which it rests is 0.25. The weight w is 12.0 N, and the system is in equilibrium. (a) Find...

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