A 020-Kg Block Rests on a Frictionless Level Surface and Is

question 44

Multiple Choice

A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 40 N/m.The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion.A frictional force of 0.3 N exists between the block and surface.What is the speed of the block when it passes through the equilibrium point after being released from the 4.0-cm displacement point?

• A)0.45 m/s
• B)0.63 m/s
• C)0.80 m/s
• D)1.2 m/s

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Definitions:

Variable Overhead Efficiency Variance

The difference between the actual variable overhead based on hours worked and the standard cost of variable overhead for those hours.

Standard Variable Overhead Rate

The predetermined rate at which variable overhead costs are applied to production activities, based on an expected level of activity.

Actual Total Variable Overhead Cost

The actual incurred costs that vary with production volume, such as raw materials and direct labor.