Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 11
A car of mass 1000 kg moving at 18 km/h collides with a spring and compresses it by a maximum distance of 2.00 m. If the spring is ideal and friction is negligible, what is the spring constant k of the spring in N/m?
A
3125 N/m
B
6250 N/m
C
5000 N/m
D
2500 N/m
Correct Answer
Option B
Detailed Explanation
The kinetic energy of the car is converted into the potential energy of the spring. Using the formula 1/2 k x^2 = 1.25 × 10^4 J and x = 2.00 m, solving for k gives k = 6250 N/m.
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