A mass of 36 kg is kept vertically on the top of a massless spring. What is the maximum compression of the spring if the spring constant is $15000$N/m. Assume $g=10 m/s^2$.

চিত্রে m ভরের বস্তুটি অনুভূমিক ঘর্ষণহীন তলে সরল ছন্দিত গতিতে স্পন্দিত হচ্ছে। m = 10 kg, স্প্রিং ধ্রুবক = 30 Nm$^{-1}$

কোন অবস্থানে বস্তুটির ত্বরণ সবচেয়ে বেশি?

"The motion of a particle with a restoring force gives oscillatory motion". Which of the following force can be a restoring force for the oscillatory motion.

In their discussions of SHM text books sometimes consider a thingy attached to a horizontal spring and moving horizontally on a frictionless surface, instead of the hanging thingy that we have been looking at. ;Suppose that the two springs and the two thingies are identical. Think about whether these two systems are significantly different in other respects and decide which one of the following statements is true.

The black graph pictured above represents the position-time graph for a spring-mass system oscillating with simple harmonic motion.

The colored, dashed graphs represent shapes of possible velocity time graphs for the same motion.

The vertical axis stands for position or velocity, but the scaling does not matter. The time axis is the same for all graphs.

Which colored graph best represents the possible velocity for the mass in this spring-mass system?