Question

A frictionless block of mass 2.30 kg is attached to an ideal spring with force constant 300 N/m . At t=0the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 12.1 m/s .

A. Find the amplitude.

A =____ m

B. Find the phase angle.

ϕ = ____ rad

C. Multiple Choice: Write an equation for the position as a function of time.

(a.) x=(− 1.06 m )sin(( 11.4 rad/s )t)

(b.) x=(− 1.06 m )cos(( 11.4 rad/s )t)

(c.) x=(− 11.4 m)sin(( 1.06 rad/s)t)

(d.) x=(− 11.4 m)cos(( 1.06 rad/s)t)

Answer 1