An ideal massless spring S can be compressed by 1 m by a force of 100 N in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane at 30∘ to the horizontal. A 10 kg block M is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by 2 m. If g=10 m/s2, what is the speed of mass just before it touches the spring?

An ideal massless spring S can be compressed by 1 m by a force of 100

1.	An ideal massless spring S can be compressed by 1 m by a force of 100 N in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane at 30∘ to the horizontal. A 10 kg block M is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by 2 m. If g=10 m/s2, what is the speed of mass just before it touches the spring?
Answer» An ideal massless spring $S$ can be compressed by $1 m$ by a force of $100 N$ in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane at $30^{\circ}$ to the horizontal. A $10 k g$ block $M$ is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by $2 m$ . If $g = 10 m / s^{2}$ , what is the speed of mass just before it touches the spring?

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