Ex. 67 : A steel wire is acted upon by a load of 10 N. Calculate the extension produced in the wire if the strain energy stored in the wire is 1.1 x 10-J.
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- avdcceieration using an inclined plan Eplaeee 8) During vibrating spring experiment data table is given. Plot Force (y-axis) vs change in L(x-axis) and determine the slope Trial 1 Change in L in meters 0.50 0.80 1.40 1.90 Force (N) 1.5 3.0 4.5 6.0 4 t untor mins 20 of enerax and aluminum can gains 10 J energy. What is theA 0.46 kg block is hung from and stretches a spring that is attached to the ceiling. A second block is attached to the first one, and the amount that the spring stretches from its unstretched length triples. What is the mass of the second block?An automobile having a mass of 1000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 4.75 106 N/m and is compressed 2.70 cm as the car is brought to rest. What was the speed of the car before impact, assuming no energy is lost in the collision with the wall? m/s
- A cylindrical specimen of some metal alloy of 8 mm in diameter is stressed elastically in tension. A force of 15700 N produces the elastic modulus of 138 GPa of the specimen, the longitudinal strain is: O a. 2.26 O b. 2.23 O c. 2.28 O d. 2.29A spring with a spring constant of 112 N/m has a mass hung on it so that it stretches 1.2 cm. Calculate how much mass the spring is supporting.Using the spring force, F = -kx, calculate: a) The work done by an external force stretching the spring a distance L away from the equilibrium length. b) At a stretch length L, how much potential energy is stored in the spring? If a mass m is attached to the spring and released from a stretch length L, what is the maximum velocity c) of the mass? d) At what x coordinate does this maximum velocity occur?