To measure the spring constant of a certain spring, a student applies a 4.0-N force, and the spring stretches by 5.0 cm. What is the spring constant?
Answer to relevant QuestionsA spring has a spring constant of 30 N/m. How much work is required to stretch the spring 2.0 cm from its equilibrium position? Compute the work done by the variable force in the graph of F versus x in Fig. 5.29. A 0.20-kg object with a horizontal speed of hits a wall and bounces directly back with only half the original speed. (a) What percentage of the object’s initial kinetic energy is lost: (1) 25%, (2) 50%, or (3) 75%? (b) ...How much more gravitational potential energy does a 1.0-kg hammer have when it is on a shelf 1.2 m high than when it is on a shelf 0.90 m high? A 0.300-kg ball is thrown vertically upward with an initial speed of 10.0 m/s. If the initial potential energy is taken as zero, find the ball’s kinetic, potential, and mechanical energies (a) At its initial position, ...
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