17. Periodic Motion
Spring Force (Hooke's Law)
17. Periodic Motion
Spring Force (Hooke's Law)
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- Multiple Choice
A 1.0 m-long spring is laid horizontally with one of its ends fixed. When you pull on it with 50 N, it stretches to 1.2 m. (a) What is the spring's force constant (b) How much force is needed to compress it to 0.7 m?
1098views34rank - Multiple Choice
You push a 3-kg mass against a spring and release it from rest. Its maximum acceleration is 10m/s2 when pushed back 0.5m. What is the (a)spring constant and (b) restoring force at this point?
981views23rank3comments - Multiple ChoiceA 20.0 cm massless spring with spring constant 340 N/m is suspended from the ceiling. A student carefully hangs a 450 g mass from the free end. How long is the spring now?610views
- Multiple ChoiceA spring with a spring constant of is attached to a rubber block with mass 3.0 kg. The block is resting on a concrete surface (). The spring is pulled to the side until the block begins to slip. What is the maximum extension of the spring before the block slips?349views
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- Textbook QuestionA thin, uniform rod has length L and mass M. A small uniform sphere of mass m is placed a distance x from one end of the rod, along the axis of the rod (Fig. E13.34). (b) Use Fx = -dU>dx to find the magnitude and direction of the gravitational force exerted on the sphere by the rod (see Section 7.4). Show that your answer reduces to the expected result when x is much larger than L.888views1rank
- Textbook QuestionA uniform, spherical, 1000.0-kg shell has a radius of 5.00 m. (b) Sketch a qualitative graph of the magnitude of the gravitational force this sphere exerts on a point mass m as a function of the distance r of m from the center of the sphere. Include the region from r = 0 to r -> ∞.475views