Home › CBSE Class 11 › Physics › c9kineticenergy › Per NCERT §5.9 example (5.8), a 1000 kg car at 1…
Per NCERT §5.9 example (5.8), a 1000 kg car at 18.0 km/h (= 5 m/s) hits a spring with k = 5.25×10³ N/m. Maximum compression is approximately which?
A0.5 m
B0.1 m
C2.18 m
D5 m
Answer & Solution
Correct answer: C. 2.18 m
NCERT Ex 5.8: (1/2) m v² = (1/2) k x² ⇒ x = v √(m/k) = 5 √(1000/5250) ≈ 2.18 m.
Related questions
A crate dragged across a rough floor loses mechanical energy because friction is:Conservation of mechanical energy is the form the work-energy theorem takes when the forceCalculating work for a conservative force is easier than for a complicated path because itA force acting entirely perpendicular to an object's displacement does how much work?Mechanical energy transferred into or out of a system equals the work done by an external Winding up a toy or an old-fashioned watch stores energy by doing work against its:Which three energy examples are named together?The kinetic energy in the work-energy theorem is specifically the translational kinetic en