A0.20-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 360 n/m. the block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest. the block then executes simple harmonic motion along the horizontal x-axis. when the displacement is x = -2.3×10−2 m, find the acceleration of the block.

The answer is 41,4

Explanation:

To understand this problem we need to visualize when block is at the equilibrium position and when the displacement is x=.

According to Newton's law , if we find the force applied to the block, we can find the acceleration since we know the mass of the block.

If you compress a spring by x displacement under F force, the spring's force can be found as:

Therefore

And to find acceleration:

→ →

most of them using statistics and defining how things are being measured

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?