Recent content by frozen-pizza

yea the angle at the line drawn between the hinges right?

Homework Statement A bridge with a steel framework is 500.000m long on a winter day at 5.0 C. For steel use 11.0x10^-6/ dC a) Find the length of the bridge on a summer day when the bridge temperature is 55.0 C. Keep 6 significant figures in this part and in part b). The bridge is built in the...

I see thank you so much

yea that makes sense, it just happened to work out then. ok so if i set x(t)=0 is x(t)=Acos(0+Φ)? if so do i have to set it equal to 1.30 cm?

54.1 cm/s

for amplitude i used Vmax=Aw so A=.541/11.2 and i seem to get the right answer, is this right or just a coincidence?

Homework Statement a horizontal spring-mass is composed of a spring with constant 10.0 N/m and an 80.0 gram mass on the end of the spring. the surface supporting the mass is friction less. when the system is first observed, the spring is extended 1.30 cm and the velocity of the mass is 54.1...