The 2-lb brick slides down a smooth roof, such that when it is at A it has a velocity of 5 ft/s.
Determine the speed of the brick just before it leaves the surface at B, the distance d from the wall
to where it strikes the ground, and the speed at which it hits the ground.
Answer:
VB = 31.5 ft/s
d = 22.6 ft
VC = 54.1 ft/s
𝑔𝑟
A small box of mass m is given a speed of v = √ 4 at the top of the smooth half cylinder. Determine
the angle 𝜃 at which the box leaves the cylinder.
Answer:
𝜃 = 41.4
The 25-lb block has an initial speed of 10 ft/s when it is midway between springs A and B. After
striking spring B, it rebounds and slides across the horizontal plane toward spring A, etc. If the
coefficient of kinetic friction between the plane and the block is 0.4 determine the total distance
traveled by the block before it comes to rest.
Answer:
x = 0.688 m