Multiple Choice
Hooke's law: An object attached to an ideal massless spring is pulled across a frictionless surface. If the spring constant is 45 N/m and the spring is stretched by 0.88 m when the object is accelerating at what is the mass of the object?
A) 20 kg
B) 17 kg
C) 22 kg
D) 26 kg
Correct Answer:

Verified
Correct Answer:
Verified
Q86: Work-energy theorem: A 4.00-kg mass is attached
Q87: Elastic potential energy: An athlete stretches a
Q88: Energy conservation with conservative forces: A 2.0-kg
Q89: Energy conservation with conservative forces: Consider the
Q90: Work-energy theorem: A 7.0-kg rock is subject
Q92: Work: In the figure, a 700-kg crate
Q93: Energy conservation with nonconservative forces: An object
Q94: Work-energy theorem: A ball is thrown upward
Q95: Energy conservation with conservative forces: Two identical
Q96: Kinetic energy: A 1000.0 kg car is