Laws of MotionHard
Question
A spring has an equilibrium length of 2.0 meters and a spring constant of 10 newtons/meter. Alice is pulling on one end of the spring with a force of 3.0 newtons. Bob is pulling on the opposite end of the spring with a force of 3.0 newtons in the opposite direction. What is the resulting length of the spring ?
Options
A.1.7 m
B.2.0 m
C.2.3 m
D.2.6 m
Solution
extension x = 
= 0.3
l′ = l + x = 2 + 0.3 = 2.3 m
= 0.3l′ = l + x = 2 + 0.3 = 2.3 m
Create a free account to view solution
View Solution FreeMore Laws of Motion Questions
A body is sliding down an inclined plane (angle of inclination 45o). If the coefficient of friction is 0.5 and g = 9.8 m...A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of 1012/sec. What is th...Five persons A, B, C, D & E are pulling a cart of mass 100 kg on a smooth surface and cart is moving with acceleration 3...Two blocks A and B of mass 10 kg and 40 kg are connected by an ideal string as shown in the figure. Neglect the masses o...With what minimum acceleration can a fireman slides down a rope whose breaking strength is 2/3 of his weight :...