A block of mass m is compressed against a spring (spring constant kk) on a horizontal frictionless surface. The block is then re
leased and subsequently falls from a high ground of height hh. The maximum compression of the spring before the block was released is \Delta xΔx. The velocity of the block after release is v_1v1. The velocity of the block when it hits the ground is v_2v2. A.If the block started with a compression of \frac{1}{2}\Delta x21Δx, the block velocity after leaving would be \frac{1}{2}v21v.
B.The mechanical energy of this system is not conserved.
C.If height h is changed to h=2hh=2h, then the velocity of the block v_2v2 will be changed into v_2=2vv2=2v.
D.If the block started with a compression of 3\Delta x3Δx, the block’s velocity after leaving would be 6v6v.
E.None of the above statements are true.
2 someone's glasses could fall of because of the inertia roller coaster is in motion but your glasses are opposing and resisting that motion due to inertia....
1 there is a possibility that electrons move from wheels to the rail and vice versa which also means that it is producing some kind of electrical energy
when the rubber band is realeased the potential energy is quickly converted to kinetic energy this is equal to one mass of the the rubber band multiplied by its velocity( in meters per second)
