A 4 kg block free to move on a horizontal,frictionless surface is attached to a spring.The spring is compressed 0.15 m from equilibrium and released.The speed of the block is 1.15 m/s when it passes the equilibrium position of the spring.The same exp
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A 4 kg block free to move on a horizontal,frictionless surface is attached to a spring.The spring is compressed 0.15 m from equilibrium and released.The speed of the block is 1.15 m/s when it passes the equilibrium position of the spring.The same exp
A 4 kg block free to move on a horizontal,
frictionless surface is attached to a spring.
The spring is compressed 0.15 m from equilibrium and released.The speed of the block is 1.15 m/s when it passes the equilibrium position of the spring.The same experiment isnow repeated with the frictionless surface replaced by a surface with coefficient of friction 0.24
.Determine the speed of the block at the equilibrium position of the spring.The acceleration due to gravity is 9.8 m/s
.
Answer in units of m/s
.
A 4 kg block free to move on a horizontal,frictionless surface is attached to a spring.The spring is compressed 0.15 m from equilibrium and released.The speed of the block is 1.15 m/s when it passes the equilibrium position of the spring.The same exp
4 kg的方块被连接到弹簧,在水平上无摩擦表面自由移动.
弹簧被从平衡位置压缩0.15米后释放.块的速度为1.15米/秒时,通过该弹簧的平衡位置.
重复相同的实验,现在替代为表面摩擦系数0.24,
求该块在弹簧的平衡位置的速度.（重力加速度为9.8米/秒）
用能量相等来做：.
m（1/2)v0^2-mμgL=(1/2)mv1^2【动力做功减去阻力做功等于剩余动能】
v1=根号[v0^2-2μgL]=根号0.6169≈0.79米每秒.