x(cm) x(cm) 20- 20- 10 WAA, 10 1(s) - r(s) -10 -20 -10- -20 Block A Block B wo blocks are connected to identical ideal springs and re oscillating on a horizontal frictionless surface. Block has mass m, and its motion is represented by the raph of position as a function of time shown above on he left. Block B's motion is represented above on the ght. Which of the following statements comparing lock B to block A is correct? Because block B covers more distance (A) per cycle than block A, block B takes more time to complete each cycle. Because the spring attached to block B is initially stretched a greater distance, the spring constant is smaller and therefore block B has a slower average B speed than block A does. Because block B has more mass, it has a slower average speed than block A does.

Consider a spring mass fldamper syatem with the parameters m= 100 kg c= 20kg/s k= 1000 N/m It is known that a parge force of 500 N is applied to the damped system for 20 ms. What is the express of response of the system

Review | Constants | Periodic Table Notice chge foet onation when aking off and landing Hopping is an efficient method af locomotion for the kangaroo (see the figure above). When the kangaroo is in the air, the Earth-kangaroo system has a combination of gravitational potential energy and kinetic energy. When the kangaroo lands, its Achiles tendons and the attached muscies stretch-a form of elastic potential energy. This elastic potential energy is used along with additional muscle tension to launch the kangaroo off the ground for the next hop. In the red kangaroo, more than 50% of the total energy used during each hop is recovered elastic potential energy. This is so efficient that the kangaroo's metabolic rate actually decreases slightly as its hopping speed increases from B km/h to 25 km/h. The horizontal and vertical force components exerted by a firm surface on a kangaroo's feet while it hops are shown in the figure. The vertical force Ns on K (the figure below) varies: when the…

Imagine a bar of gold is hung on a spring in your kitchen and it extends the spring by 7 cm. At approximately what frequency in Hz (cycles per second) wilI the bar oscillate up and down when given a gentle vertical kick, if there is essentially no damping. Hz If we take the spring and the bar of gold to the surface of the moon, will the oscillation frequency there be higher, lower, or the same? Explain your answer above.