Homework Statement
A 70-kilogram cyclist develops 210 watts of power while pedaling at a constant velocity of 7 m/s east. What average force is exerted eastward on the bicycle to maintain this constant speed?
m = 70kg
W = 210 J
V = 7 m/s
F = ?
Homework Equations
The Attempt at a...
Yes, today I asked my teacher about it in class, and he explained it to me. We know the spring constant is 4 N/m and the force applied, which is 1.2 Newtons. Both are incorporated in Hooke's law(F = -kx); using it, we can solve for x by dividing the force by the spring constant, leaving .3...
Homework Statement
A spring with a spring constant of 4 Newtons per meter is compressed by a force of 1.2 Newtons. What is the total elastic potential energy stored in this compressed spring?
k = 4 N/m
F = 1.2 N
PE = ?
Homework Equations
PE = (1/2)(k)(x)^2
The Attempt at a Solution...