Consider the track shown in the figure. The section AB is onequadrant of a circle of radius 2.0 m and is frictionless.B to C is a horizontal span 2.5 m long with a coefficientof kinetic friction μk = 0.27. The section CD under thespring is frictionless. A block of mass 1.0 kg is releasedfrom rest at A. After sliding on the track, it compresses thespring by 0.30m . (Figure 1)

Determine the velocity of the block at point B.

Express your answer to two significant figures and include theappropriate units.

a) Determine the velocity of the block at point B.

Express your answer to two significant figures and include theappropriate units.

vB= value,units

b)

Determine the thermal energy produced as the block slides from Bto C.

Express your answer to two significant figures and include theappropriate units.

E= value , units ?

c)

Determine the velocity of the block at point C.

Express your answer to two significant figures and include theappropriate units

vC = value , units ?

d)

Determine the stiffness constant k for the spring.

Express your answer to two significant figures and include theappropriate units.

k = ? value , units

Figure < 1 of 1 m= 1.0 kg A r=2.0 m W www D B 3 С